diff --git a/ProgrammingChallenge2.csproj b/ProgrammingChallenge2.csproj
index 8c9be8e..16ada9a 100644
--- a/ProgrammingChallenge2.csproj
+++ b/ProgrammingChallenge2.csproj
@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-    <PackageReference Include="Google.Protobuf" Version="3.12.4" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Google.Protobuf.Tools" Version="3.12.4" />
   </ItemGroup>