diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index f4baa96a3..9d96fefa2 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -5,7 +5,7 @@
     <PackageProjectUrl>https://csharp.sdk.modelcontextprotocol.io</PackageProjectUrl>
     <RepositoryUrl>https://github.com/modelcontextprotocol/csharp-sdk</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
-    <VersionPrefix>1.4.1</VersionPrefix>
+    <VersionPrefix>1.4.2</VersionPrefix>
     <Authors>ModelContextProtocol</Authors>
     <Copyright>© Model Context Protocol a Series of LF Projects, LLC.</Copyright>
     <PackageTags>ModelContextProtocol;mcp;ai;llm</PackageTags>
diff --git a/src/PACKAGE.md b/src/PACKAGE.md
index 842f8223e..390818c41 100644
--- a/src/PACKAGE.md
+++ b/src/PACKAGE.md
@@ -4,7 +4,7 @@
 
 The official C# SDK for the [Model Context Protocol](https://modelcontextprotocol.io/), enabling .NET applications, services, and libraries to implement and interact with MCP clients and servers. Please visit the [API documentation](https://csharp.sdk.modelcontextprotocol.io/api/ModelContextProtocol.html) for more details on available functionality.
 
-See the [release notes](https://github.com/modelcontextprotocol/csharp-sdk/releases/tag/v1.4.1) for what's new in this version.
+See the [release notes](https://github.com/modelcontextprotocol/csharp-sdk/releases/tag/v1.4.2) for what's new in this version.
 
 ## Packages