diff --git a/src/Vulnerability.Direct/Vulnerability.Direct.csproj b/src/Vulnerability.Direct/Vulnerability.Direct.csproj
index ef4b609..7f1f733 100644
--- a/src/Vulnerability.Direct/Vulnerability.Direct.csproj
+++ b/src/Vulnerability.Direct/Vulnerability.Direct.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
   <ItemGroup>
 	  <PackageReference Include="Bond.Core.CSharp" Version="5.3.1" />
-	  <PackageReference Include="Google.Protobuf" Version="3.3.0" />
+	  <PackageReference Include="Google.Protobuf" Version="3.15.0" />
 	  <PackageReference Include="System.Text.RegularExpressions" Version="4.1.0" />
 	  <PackageReference Include="System.Net.Http" Version="4.3.3" />
   </ItemGroup>