diff --git a/python/CHANGELOG.md b/python/CHANGELOG.md
index 0ae7dedd12..e2adf2762e 100644
--- a/python/CHANGELOG.md
+++ b/python/CHANGELOG.md
@@ -7,6 +7,27 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.4.0] - 2026-05-14
+
+### Added
+- **agent-framework-core**: Forward MCP tool call metadata ([#5815](https://github.com/microsoft/agent-framework/pull/5815))
+- **agent-framework-core**: Support `list[str]` arguments for file-based skill scripts ([#5850](https://github.com/microsoft/agent-framework/pull/5850))
+- **agent-framework-core**: Strip server-issued response item IDs under storage ([#5690](https://github.com/microsoft/agent-framework/pull/5690))
+- **agent-framework-ag-ui**: Add tool result display channel ([#5762](https://github.com/microsoft/agent-framework/pull/5762))
+- **agent-framework-ag-ui**: Promote to release candidate stage ([#5844](https://github.com/microsoft/agent-framework/pull/5844))
+- **agent-framework-devui**: Improvements for DevUI ([#5840](https://github.com/microsoft/agent-framework/pull/5840))
+
+### Changed
+- **agent-framework-core**: [BREAKING — experimental skills API] Align file skill folder discovery with agentskills.io spec ([#5807](https://github.com/microsoft/agent-framework/pull/5807))
+- **agent-framework-core**: [BREAKING — experimental skills API] Extract skill spec metadata into `SkillFrontmatter` ([#5775](https://github.com/microsoft/agent-framework/pull/5775))
+- **agent-framework-devui**: [BREAKING] Tighten default access controls and CORS posture ([#5740](https://github.com/microsoft/agent-framework/pull/5740))
+- **agent-framework-a2a**: [BREAKING] Migrate to a2a-sdk v1.0 ([#5752](https://github.com/microsoft/agent-framework/pull/5752))
+
+### Fixed
+- **agent-framework-a2a**: Fix A2A v1.0 non-streaming response and sample runtime issues ([#5849](https://github.com/microsoft/agent-framework/pull/5849))
+- **agent-framework-foundry-hosting**: Reject path-traversal context IDs in checkpoint storage ([#5851](https://github.com/microsoft/agent-framework/pull/5851))
+- **agent-framework-core**: Prevent MCP message_handler deadlock on notification reload ([#4866](https://github.com/microsoft/agent-framework/pull/4866))
+
 ## [1.3.0] - 2026-05-07
 
 ### Added
@@ -1050,7 +1071,9 @@ Release candidate for **agent-framework-core** and **agent-framework-azure-ai**
 
 For more information, see the [announcement blog post](https://devblogs.microsoft.com/foundry/introducing-microsoft-agent-framework-the-open-source-engine-for-agentic-ai-apps/).
 
-[Unreleased]: https://github.com/microsoft/agent-framework/compare/python-1.2.2...HEAD
+[Unreleased]: https://github.com/microsoft/agent-framework/compare/python-1.4.0...HEAD
+[1.4.0]: https://github.com/microsoft/agent-framework/compare/python-1.3.0...python-1.4.0
+[1.3.0]: https://github.com/microsoft/agent-framework/compare/python-1.2.2...python-1.3.0
 [1.2.2]: https://github.com/microsoft/agent-framework/compare/python-1.2.1...python-1.2.2
 [1.2.1]: https://github.com/microsoft/agent-framework/compare/python-1.2.0...python-1.2.1
 [1.2.0]: https://github.com/microsoft/agent-framework/compare/python-1.1.1...python-1.2.0
diff --git a/python/packages/a2a/pyproject.toml b/python/packages/a2a/pyproject.toml
index a245267acf..43ce8e985f 100644
--- a/python/packages/a2a/pyproject.toml
+++ b/python/packages/a2a/pyproject.toml
@@ -4,7 +4,7 @@ description = "A2A integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "a2a-sdk>=1.0.0,<2",
 ]
 
diff --git a/python/packages/ag-ui/pyproject.toml b/python/packages/ag-ui/pyproject.toml
index 6e16d0cecd..cdd5bda432 100644
--- a/python/packages/ag-ui/pyproject.toml
+++ b/python/packages/ag-ui/pyproject.toml
@@ -22,7 +22,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "ag-ui-protocol>=0.1.16,<0.2",
     "fastapi>=0.115.0,<0.133.1",
     "uvicorn[standard]>=0.30.0,<0.42.0"
diff --git a/python/packages/anthropic/pyproject.toml b/python/packages/anthropic/pyproject.toml
index 0f31180b0f..619523bb4c 100644
--- a/python/packages/anthropic/pyproject.toml
+++ b/python/packages/anthropic/pyproject.toml
@@ -4,7 +4,7 @@ description = "Anthropic integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "anthropic>=0.80.0,<0.80.1",
 ]
 
diff --git a/python/packages/azure-ai-search/pyproject.toml b/python/packages/azure-ai-search/pyproject.toml
index c80cc8741d..1e0416a671 100644
--- a/python/packages/azure-ai-search/pyproject.toml
+++ b/python/packages/azure-ai-search/pyproject.toml
@@ -4,7 +4,7 @@ description = "Azure AI Search integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "azure-search-documents>=11.7.0b2,<11.7.0b3",
 ]
 
diff --git a/python/packages/azure-contentunderstanding/pyproject.toml b/python/packages/azure-contentunderstanding/pyproject.toml
index c225bf0ec0..2fc4f35c50 100644
--- a/python/packages/azure-contentunderstanding/pyproject.toml
+++ b/python/packages/azure-contentunderstanding/pyproject.toml
@@ -4,7 +4,7 @@ description = "Azure Content Understanding integration for Microsoft Agent Frame
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com" }]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0a260507"
+version = "1.0.0a260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,8 +23,8 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
-    "agent-framework-foundry>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
+    "agent-framework-foundry>=1.4.0,<2",
     "azure-ai-contentunderstanding>=1.0.1,<1.1",
     "aiohttp>=3.9,<4",
     "filetype>=1.2,<2",
diff --git a/python/packages/azure-cosmos/pyproject.toml b/python/packages/azure-cosmos/pyproject.toml
index e90060b689..c65401c3b7 100644
--- a/python/packages/azure-cosmos/pyproject.toml
+++ b/python/packages/azure-cosmos/pyproject.toml
@@ -4,7 +4,7 @@ description = "Azure Cosmos DB history provider integration for Microsoft Agent
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "azure-cosmos>=4.3.0,<5",
 ]
 
diff --git a/python/packages/azurefunctions/pyproject.toml b/python/packages/azurefunctions/pyproject.toml
index ec11852160..e779d7276c 100644
--- a/python/packages/azurefunctions/pyproject.toml
+++ b/python/packages/azurefunctions/pyproject.toml
@@ -4,7 +4,7 @@ description = "Azure Functions integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -22,7 +22,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "agent-framework-durabletask",
     "azure-functions>=1.24.0,<2",
     "azure-functions-durable>=1.3.1,<2",
diff --git a/python/packages/bedrock/pyproject.toml b/python/packages/bedrock/pyproject.toml
index 096b1914b6..281c9009ef 100644
--- a/python/packages/bedrock/pyproject.toml
+++ b/python/packages/bedrock/pyproject.toml
@@ -4,7 +4,7 @@ description = "Amazon Bedrock integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "boto3>=1.35.0,<2.0.0",
     "botocore>=1.35.0,<2.0.0",
 ]
diff --git a/python/packages/chatkit/agent_framework_chatkit/_converter.py b/python/packages/chatkit/agent_framework_chatkit/_converter.py
index e92583188c..f108c28312 100644
--- a/python/packages/chatkit/agent_framework_chatkit/_converter.py
+++ b/python/packages/chatkit/agent_framework_chatkit/_converter.py
@@ -21,6 +21,7 @@
     HiddenContextItem,
     ImageAttachment,
     SDKHiddenContextItem,
+    StructuredInputItem,
     TaskItem,
     ThreadItem,
     UserMessageItem,
@@ -527,6 +528,9 @@ async def _thread_item_to_input_item(
             case GeneratedImageItem():
                 # TODO(evmattso): Implement generated image handling in a future PR
                 return []
+            case StructuredInputItem():
+                # TODO(evmattso): Implement structured input handling in a future PR
+                return []
             case _:
                 assert_never(item)
 
diff --git a/python/packages/chatkit/pyproject.toml b/python/packages/chatkit/pyproject.toml
index 22cf36dafd..b894d63245 100644
--- a/python/packages/chatkit/pyproject.toml
+++ b/python/packages/chatkit/pyproject.toml
@@ -4,7 +4,7 @@ description = "OpenAI ChatKit integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -22,7 +22,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "openai-chatkit>=1.4.1,<2.0.0",
 ]
 
diff --git a/python/packages/claude/pyproject.toml b/python/packages/claude/pyproject.toml
index ae3b663993..f35c92187f 100644
--- a/python/packages/claude/pyproject.toml
+++ b/python/packages/claude/pyproject.toml
@@ -4,7 +4,7 @@ description = "Claude Agent SDK integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "claude-agent-sdk>=0.1.36,<0.1.49",
 ]
 
diff --git a/python/packages/copilotstudio/pyproject.toml b/python/packages/copilotstudio/pyproject.toml
index ab0d692179..121364c18f 100644
--- a/python/packages/copilotstudio/pyproject.toml
+++ b/python/packages/copilotstudio/pyproject.toml
@@ -4,7 +4,7 @@ description = "Copilot Studio integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "microsoft-agents-copilotstudio-client>=0.3.1,<0.3.2",
 ]
 
diff --git a/python/packages/core/pyproject.toml b/python/packages/core/pyproject.toml
index a2fe7a91cc..d90dbc1db2 100644
--- a/python/packages/core/pyproject.toml
+++ b/python/packages/core/pyproject.toml
@@ -4,7 +4,7 @@ description = "Microsoft Agent Framework for building AI Agents with Python. Thi
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.3.0"
+version = "1.4.0"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
diff --git a/python/packages/declarative/pyproject.toml b/python/packages/declarative/pyproject.toml
index 765e1cbe0a..419457a3a1 100644
--- a/python/packages/declarative/pyproject.toml
+++ b/python/packages/declarative/pyproject.toml
@@ -4,7 +4,7 @@ description = "Declarative specification support for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -22,7 +22,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "httpx>=0.27,<1",
     "powerfx>=0.0.32,<0.0.35; python_version < '3.14'",
     "pyyaml>=6.0,<7.0",
diff --git a/python/packages/devui/pyproject.toml b/python/packages/devui/pyproject.toml
index e050d64092..e32eb5f486 100644
--- a/python/packages/devui/pyproject.toml
+++ b/python/packages/devui/pyproject.toml
@@ -4,7 +4,7 @@ description = "Debug UI for Microsoft Agent Framework with OpenAI-compatible API
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://github.com/microsoft/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
  dependencies = [
-     "agent-framework-core>=1.3.0,<2",
+     "agent-framework-core>=1.4.0,<2",
      "openai>=1.99.0,<3",
      "opentelemetry-sdk>=1.39.0,<2",
      "fastapi>=0.115.0,<0.133.1",
diff --git a/python/packages/durabletask/pyproject.toml b/python/packages/durabletask/pyproject.toml
index 17194e1fd7..2d737c9a75 100644
--- a/python/packages/durabletask/pyproject.toml
+++ b/python/packages/durabletask/pyproject.toml
@@ -4,7 +4,7 @@ description = "Durable Task integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -22,7 +22,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "durabletask>=1.3.0,<2",
     "durabletask-azuremanaged>=1.3.0,<2",
     "python-dateutil>=2.8.0,<3",
diff --git a/python/packages/foundry/pyproject.toml b/python/packages/foundry/pyproject.toml
index 29fee5204f..405b5f7559 100644
--- a/python/packages/foundry/pyproject.toml
+++ b/python/packages/foundry/pyproject.toml
@@ -4,7 +4,7 @@ description = "Microsoft Foundry integrations for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.3.0"
+version = "1.4.0"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,8 +23,8 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
-    "agent-framework-openai>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
+    "agent-framework-openai>=1.4.0,<2",
     "azure-ai-inference>=1.0.0b9,<1.0.0b10",
     "azure-ai-projects>=2.1.0,<3.0",
 ]
diff --git a/python/packages/foundry_hosting/pyproject.toml b/python/packages/foundry_hosting/pyproject.toml
index d3e3de127d..35a218a6c1 100644
--- a/python/packages/foundry_hosting/pyproject.toml
+++ b/python/packages/foundry_hosting/pyproject.toml
@@ -4,7 +4,7 @@ description = "Foundry Hosting integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0a260507"
+version = "1.0.0a260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "azure-ai-agentserver-core>=2.0.0b3,<3",
     "azure-ai-agentserver-responses>=1.0.0b5,<2",
     "azure-ai-agentserver-invocations>=1.0.0b3,<2",
diff --git a/python/packages/foundry_local/pyproject.toml b/python/packages/foundry_local/pyproject.toml
index 4a45c66c79..88085ca1b0 100644
--- a/python/packages/foundry_local/pyproject.toml
+++ b/python/packages/foundry_local/pyproject.toml
@@ -4,7 +4,7 @@ description = "Foundry Local integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,8 +23,8 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
-    "agent-framework-openai>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
+    "agent-framework-openai>=1.4.0,<2",
     "foundry-local-sdk>=0.5.1,<0.5.2",
 ]
 
diff --git a/python/packages/gemini/pyproject.toml b/python/packages/gemini/pyproject.toml
index 6a39ab074f..dbeb4b261c 100644
--- a/python/packages/gemini/pyproject.toml
+++ b/python/packages/gemini/pyproject.toml
@@ -4,7 +4,7 @@ description = "Google Gemini integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0a260507"
+version = "1.0.0a260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -24,7 +24,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2.0",
+    "agent-framework-core>=1.4.0,<2.0",
     "google-genai>=1.65.0,<2.0.0",
 ]
 
diff --git a/python/packages/github_copilot/pyproject.toml b/python/packages/github_copilot/pyproject.toml
index e55d082403..85dae1802b 100644
--- a/python/packages/github_copilot/pyproject.toml
+++ b/python/packages/github_copilot/pyproject.toml
@@ -4,7 +4,7 @@ description = "GitHub Copilot integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "github-copilot-sdk>=1.0.0b2,<=1.0.0b2; python_version >= '3.11'",
 ]
 
diff --git a/python/packages/hyperlight/pyproject.toml b/python/packages/hyperlight/pyproject.toml
index e4c5b28ba3..a7895c3128 100644
--- a/python/packages/hyperlight/pyproject.toml
+++ b/python/packages/hyperlight/pyproject.toml
@@ -4,7 +4,7 @@ description = "Hyperlight CodeAct integrations for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -22,7 +22,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "hyperlight-sandbox>=0.4.0,<0.5",
     "hyperlight-sandbox-backend-wasm>=0.4.0,<0.5 ; ((sys_platform == 'linux' and platform_machine == 'x86_64') or (sys_platform == 'win32' and platform_machine == 'AMD64')) and python_version < '3.14'",
     "hyperlight-sandbox-python-guest>=0.4.0,<0.5",
diff --git a/python/packages/lab/pyproject.toml b/python/packages/lab/pyproject.toml
index 9d7faec873..21aa8f82a2 100644
--- a/python/packages/lab/pyproject.toml
+++ b/python/packages/lab/pyproject.toml
@@ -4,7 +4,7 @@ description = "Experimental modules for Microsoft Agent Framework"
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -22,7 +22,7 @@ classifiers = [
   "Programming Language :: Python :: 3.14",
 ]
 dependencies = [
-  "agent-framework-core>=1.3.0,<2",
+  "agent-framework-core>=1.4.0,<2",
 ]
 
 [project.optional-dependencies]
diff --git a/python/packages/mem0/pyproject.toml b/python/packages/mem0/pyproject.toml
index 06b3d08623..16eb3ca1d9 100644
--- a/python/packages/mem0/pyproject.toml
+++ b/python/packages/mem0/pyproject.toml
@@ -4,7 +4,7 @@ description = "Mem0 integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "mem0ai>=1.0.0,<2",
 ]
 
diff --git a/python/packages/ollama/pyproject.toml b/python/packages/ollama/pyproject.toml
index b2bf632bcc..b785326d74 100644
--- a/python/packages/ollama/pyproject.toml
+++ b/python/packages/ollama/pyproject.toml
@@ -4,7 +4,7 @@ description = "Ollama integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://learn.microsoft.com/en-us/agent-framework/"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "ollama>=0.5.3,<0.5.4",
 ]
 
diff --git a/python/packages/openai/pyproject.toml b/python/packages/openai/pyproject.toml
index 1bc0fb8f66..7db5a6ec36 100644
--- a/python/packages/openai/pyproject.toml
+++ b/python/packages/openai/pyproject.toml
@@ -4,7 +4,7 @@ description = "OpenAI integrations for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.3.0"
+version = "1.4.0"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "openai>=1.99.0,<3",
 ]
 
diff --git a/python/packages/orchestrations/pyproject.toml b/python/packages/orchestrations/pyproject.toml
index f0fc3b6415..7325a3e59a 100644
--- a/python/packages/orchestrations/pyproject.toml
+++ b/python/packages/orchestrations/pyproject.toml
@@ -4,7 +4,7 @@ description = "Orchestration patterns for Microsoft Agent Framework. Includes Se
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
 ]
 
 [tool.uv]
diff --git a/python/packages/purview/pyproject.toml b/python/packages/purview/pyproject.toml
index 656967db11..777fc49d31 100644
--- a/python/packages/purview/pyproject.toml
+++ b/python/packages/purview/pyproject.toml
@@ -4,7 +4,7 @@ description = "Microsoft Purview (Graph dataSecurityAndGovernance) integration f
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://github.com/microsoft/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -24,7 +24,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "azure-core>=1.30.0,<2",
     "httpx>=0.27.0,<0.29",
 ]
diff --git a/python/packages/redis/pyproject.toml b/python/packages/redis/pyproject.toml
index 78f579dc31..df2ef9a518 100644
--- a/python/packages/redis/pyproject.toml
+++ b/python/packages/redis/pyproject.toml
@@ -4,7 +4,7 @@ description = "Redis integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core>=1.3.0,<2",
+    "agent-framework-core>=1.4.0,<2",
     "redis>=6.4.0,<7.2.1",
     "redisvl>=0.11.0,<0.16",
     "numpy>=2.2.6,<3"
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 8f37cc4177..d7aa3d3496 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -4,7 +4,7 @@ description = "Microsoft Agent Framework for building AI Agents with Python. Thi
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
 requires-python = ">=3.10"
-version = "1.3.0"
+version = "1.4.0"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
 urls.source = "https://github.com/microsoft/agent-framework/tree/main/python"
@@ -23,7 +23,7 @@ classifiers = [
   "Typing :: Typed",
 ]
 dependencies = [
-    "agent-framework-core[all]==1.3.0",
+    "agent-framework-core[all]==1.4.0",
 ]
 
 [dependency-groups]
diff --git a/python/uv.lock b/python/uv.lock
index cd8ee8a0ca..3469125e6d 100644
--- a/python/uv.lock
+++ b/python/uv.lock
@@ -108,7 +108,7 @@ wheels = [
 
 [[package]]
 name = "agent-framework"
-version = "1.3.0"
+version = "1.4.0"
 source = { virtual = "." }
 dependencies = [
     { name = "agent-framework-core", extra = ["all"], marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -163,7 +163,7 @@ dev = [
 
 [[package]]
 name = "agent-framework-a2a"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/a2a" }
 dependencies = [
     { name = "a2a-sdk", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -206,7 +206,7 @@ provides-extras = ["dev"]
 
 [[package]]
 name = "agent-framework-anthropic"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/anthropic" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -221,7 +221,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-azure-ai-search"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/azure-ai-search" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -236,7 +236,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-azure-contentunderstanding"
-version = "1.0.0a260507"
+version = "1.0.0a260514"
 source = { editable = "packages/azure-contentunderstanding" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -257,7 +257,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-azure-cosmos"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/azure-cosmos" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -272,7 +272,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-azurefunctions"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/azurefunctions" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -294,7 +294,7 @@ dev = []
 
 [[package]]
 name = "agent-framework-bedrock"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/bedrock" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -311,7 +311,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-chatkit"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/chatkit" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -326,7 +326,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-claude"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/claude" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -341,7 +341,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-copilotstudio"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/copilotstudio" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -356,7 +356,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-core"
-version = "1.3.0"
+version = "1.4.0"
 source = { editable = "packages/core" }
 dependencies = [
     { name = "opentelemetry-api", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -430,7 +430,7 @@ provides-extras = ["all"]
 
 [[package]]
 name = "agent-framework-declarative"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/declarative" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -457,7 +457,7 @@ dev = [{ name = "types-pyyaml", specifier = "==6.0.12.20250915" }]
 
 [[package]]
 name = "agent-framework-devui"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/devui" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -495,7 +495,7 @@ provides-extras = ["dev", "all"]
 
 [[package]]
 name = "agent-framework-durabletask"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/durabletask" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -522,7 +522,7 @@ dev = [{ name = "types-python-dateutil", specifier = "==2.9.0.20260402" }]
 
 [[package]]
 name = "agent-framework-foundry"
-version = "1.3.0"
+version = "1.4.0"
 source = { editable = "packages/foundry" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -541,7 +541,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-foundry-hosting"
-version = "1.0.0a260507"
+version = "1.0.0a260514"
 source = { editable = "packages/foundry_hosting" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -560,7 +560,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-foundry-local"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/foundry_local" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -577,7 +577,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-gemini"
-version = "1.0.0a260507"
+version = "1.0.0a260514"
 source = { editable = "packages/gemini" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -592,7 +592,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-github-copilot"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/github_copilot" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -607,7 +607,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-hyperlight"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/hyperlight" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -626,7 +626,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-lab"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/lab" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -707,7 +707,7 @@ dev = [
 
 [[package]]
 name = "agent-framework-mem0"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/mem0" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -722,7 +722,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-ollama"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/ollama" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -737,7 +737,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-openai"
-version = "1.3.0"
+version = "1.4.0"
 source = { editable = "packages/openai" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -752,7 +752,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-orchestrations"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/orchestrations" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -763,7 +763,7 @@ requires-dist = [{ name = "agent-framework-core", editable = "packages/core" }]
 
 [[package]]
 name = "agent-framework-purview"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/purview" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -780,7 +780,7 @@ requires-dist = [
 
 [[package]]
 name = "agent-framework-redis"
-version = "1.0.0b260507"
+version = "1.0.0b260514"
 source = { editable = "packages/redis" }
 dependencies = [
     { name = "agent-framework-core", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -4361,7 +4361,7 @@ wheels = [
 
 [[package]]
 name = "openai-chatkit"
-version = "1.6.3"
+version = "1.6.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "jinja2", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
@@ -4370,9 +4370,9 @@ dependencies = [
     { name = "pydantic", marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
     { name = "uvicorn", extra = ["standard"], marker = "sys_platform == 'darwin' or sys_platform == 'linux' or sys_platform == 'win32'" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/05/46/b15fd77f7df12a2cabd8475de6226ce04d1cec7b283b21e8f0f52edc63a7/openai_chatkit-1.6.3.tar.gz", hash = "sha256:f16e347f39c376a78dddb5ceaf5398a4bb700c0145bfa7cb899d65135972956e", size = 61822, upload-time = "2026-03-04T19:30:19.564Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/b3/4b/acd3155d535398656c829fb0fed2f71a7146114b05b6ed55351921f74196/openai_chatkit-1.6.4.tar.gz", hash = "sha256:68c7f6091987bec97bc8a9ad2e1c815d3f43c5abe642b0e2d3d653364478fa66", size = 64756, upload-time = "2026-05-14T21:23:55.192Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/52/5e/e06a4bec431083c282dea5729b0947b940900a4014216835182048078877/openai_chatkit-1.6.3-py3-none-any.whl", hash = "sha256:642ecdf810eda3619964f316e393f252741130a5500dc3a357d501f8657b3941", size = 42578, upload-time = "2026-03-04T19:30:18.314Z" },
+    { url = "https://files.pythonhosted.org/packages/cd/c3/b57f9a4991f3bfc4c1e4fad743822eab1929c246b60a87aded12d735e116/openai_chatkit-1.6.4-py3-none-any.whl", hash = "sha256:d20008ab5d2e837044d606171801623a21e5081150f2bcbeb8613a605186fb03", size = 44019, upload-time = "2026-05-14T21:23:53.718Z" },
 ]
 
 [[package]]