diff --git a/spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-v1/spannerlib-dotnet-grpc-v1.csproj b/spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-v1/spannerlib-dotnet-grpc-v1.csproj
index 125cc249..08b321e0 100644
--- a/spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-v1/spannerlib-dotnet-grpc-v1.csproj
+++ b/spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-v1/spannerlib-dotnet-grpc-v1.csproj
@@ -12,7 +12,7 @@
   <ItemGroup>
     <PackageReference Include="Google.Cloud.Spanner.V1" Version="5.12.0" />
     <PackageReference Include="Google.Protobuf" Version="3.34.1" />
-    <PackageReference Include="Grpc.Net.Client" Version="2.76.0" />
+    <PackageReference Include="Grpc.Net.Client" Version="2.80.0" />
   </ItemGroup>
 
 </Project>
diff --git a/spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-mockserver/spannerlib-dotnet-mockserver.csproj b/spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-mockserver/spannerlib-dotnet-mockserver.csproj
index b92589a8..0d740a56 100644
--- a/spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-mockserver/spannerlib-dotnet-mockserver.csproj
+++ b/spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-mockserver/spannerlib-dotnet-mockserver.csproj
@@ -14,7 +14,7 @@
   <ItemGroup>
     <PackageReference Include="Google.Cloud.Spanner.Admin.Database.V1" Version="5.12.0" />
     <PackageReference Include="Google.Cloud.Spanner.V1" Version="5.12.0" />
-    <PackageReference Include="Grpc.AspNetCore.Server" Version="2.76.0" />
+    <PackageReference Include="Grpc.AspNetCore.Server" Version="2.80.0" />
   </ItemGroup>
 
 </Project>