diff --git a/src/AppEngine.Tools/AppEngine.Tools.csproj b/src/AppEngine.Tools/AppEngine.Tools.csproj
index d70f5b9..8aa6a2e 100644
--- a/src/AppEngine.Tools/AppEngine.Tools.csproj
+++ b/src/AppEngine.Tools/AppEngine.Tools.csproj
@@ -31,7 +31,7 @@
         <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.11" />
         <PackageReference Include="Scalar.AspNetCore" Version="2.16.20" />
         <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="10.2.3" />
-        <PackageReference Include="Microsoft.OpenApi" Version="2.11.0" />
+        <PackageReference Include="Microsoft.OpenApi" Version="3.10.0" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/src/AppEngine/AppEngine.csproj b/src/AppEngine/AppEngine.csproj
index baa83cd..d429ee0 100644
--- a/src/AppEngine/AppEngine.csproj
+++ b/src/AppEngine/AppEngine.csproj
@@ -25,7 +25,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.11" />
-        <PackageReference Include="Microsoft.OpenApi" Version="2.11.0" />
+        <PackageReference Include="Microsoft.OpenApi" Version="3.10.0" />
         <PackageReference Include="Serilog.AspNetCore" Version="10.0.0" />
     </ItemGroup>