diff --git a/src/OpenVASP.ProtocolMessages/OpenVASP.ProtocolMessages.csproj b/src/OpenVASP.ProtocolMessages/OpenVASP.ProtocolMessages.csproj
index 33d94fc..1059044 100644
--- a/src/OpenVASP.ProtocolMessages/OpenVASP.ProtocolMessages.csproj
+++ b/src/OpenVASP.ProtocolMessages/OpenVASP.ProtocolMessages.csproj
@@ -9,7 +9,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.11.2" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Google.Protobuf.Tools" Version="3.11.2" />
   </ItemGroup>