diff --git a/TestGRPCMobileClient/TestGRPCMobileClient.Android/TestGRPCMobileClient.Android.csproj b/TestGRPCMobileClient/TestGRPCMobileClient.Android/TestGRPCMobileClient.Android.csproj
index 044616a..e4792ba 100644
--- a/TestGRPCMobileClient/TestGRPCMobileClient.Android/TestGRPCMobileClient.Android.csproj
+++ b/TestGRPCMobileClient/TestGRPCMobileClient.Android/TestGRPCMobileClient.Android.csproj
@@ -55,7 +55,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Google.Protobuf">
-      <Version>3.11.4</Version>
+      <Version>3.15.0</Version>
     </PackageReference>
     <PackageReference Include="Grpc">
       <Version>2.27.0</Version>
diff --git a/TestGRPCMobileClient/TestGRPCMobileClient/TestGRPCMobileClient.csproj b/TestGRPCMobileClient/TestGRPCMobileClient/TestGRPCMobileClient.csproj
index f514cb1..d0d0819 100644
--- a/TestGRPCMobileClient/TestGRPCMobileClient/TestGRPCMobileClient.csproj
+++ b/TestGRPCMobileClient/TestGRPCMobileClient/TestGRPCMobileClient.csproj
@@ -13,7 +13,7 @@
   <ItemGroup>
     <Protobuf Include="Protos\info.proto" Link="Protos\info.proto" />
     <Protobuf Include="Protos\InternalCommunication.proto" Link="Protos\InternalCommunication.proto" />
-    <PackageReference Include="Google.Protobuf" Version="3.11.4" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc" Version="2.27.0" />
     <PackageReference Include="Grpc.Core" Version="2.27.0" />
     <PackageReference Include="Grpc.Core.Api" Version="2.27.0" />