diff --git a/src/OpenApiSourceGenerator.Sample/OpenApiSourceGenerator.Sample.csproj b/src/OpenApiSourceGenerator.Sample/OpenApiSourceGenerator.Sample.csproj
index 44682b0..4115e30 100644
--- a/src/OpenApiSourceGenerator.Sample/OpenApiSourceGenerator.Sample.csproj
+++ b/src/OpenApiSourceGenerator.Sample/OpenApiSourceGenerator.Sample.csproj
@@ -30,7 +30,7 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.OpenApi" Version="3.0.1" />
+      <PackageReference Include="Microsoft.OpenApi" Version="3.1.1" />
     </ItemGroup>
 
 </Project>
diff --git a/src/OpenApiSourceGenerator/OpenApiSourceGenerator.csproj b/src/OpenApiSourceGenerator/OpenApiSourceGenerator.csproj
index a12d9db..ee9b525 100644
--- a/src/OpenApiSourceGenerator/OpenApiSourceGenerator.csproj
+++ b/src/OpenApiSourceGenerator/OpenApiSourceGenerator.csproj
@@ -56,7 +56,7 @@
         </PackageReference>
         <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0"
             PrivateAssets="all" />
-        <PackageReference Include="Microsoft.OpenApi" Version="3.0.2" PrivateAssets="all"
+        <PackageReference Include="Microsoft.OpenApi" Version="3.1.1" PrivateAssets="all"
             GeneratePathProperty="true" />
         <PackageReference Include="Microsoft.OpenApi.YamlReader" Version="3.0.2" PrivateAssets="all" GeneratePathProperty="true" />
     </ItemGroup>