diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index d744cbe..10c89da 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -5,8 +5,7 @@
     <PackageProjectUrl>https://modelcontextprotocol.github.io/csharp-sdk</PackageProjectUrl>
     <RepositoryUrl>https://github.com/modelcontextprotocol/csharp-sdk</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
-    <VersionPrefix>0.9.0</VersionPrefix>
-    <VersionSuffix>preview.3</VersionSuffix>
+    <VersionPrefix>1.0.0</VersionPrefix>
     <Authors>ModelContextProtocol</Authors>
     <Copyright>© Anthropic and Contributors.</Copyright>
     <PackageTags>ModelContextProtocol;mcp;ai;llm</PackageTags>