diff --git a/app-auth/GraphAppOnlyTutorial/GraphAppOnlyTutorial.csproj b/app-auth/GraphAppOnlyTutorial/GraphAppOnlyTutorial.csproj
index 614d89f..06dbf96 100644
--- a/app-auth/GraphAppOnlyTutorial/GraphAppOnlyTutorial.csproj
+++ b/app-auth/GraphAppOnlyTutorial/GraphAppOnlyTutorial.csproj
@@ -19,7 +19,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="8.0.2" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="8.0.1" />
-    <PackageReference Include="Microsoft.Graph" Version="5.77.0" />
+    <PackageReference Include="Microsoft.Graph" Version="5.91.0" />
   </ItemGroup>
 
 </Project>