diff --git a/src/Envoy.Control/Envoy.Control.csproj b/src/Envoy.Control/Envoy.Control.csproj
index 85289ac..445dac2 100644
--- a/src/Envoy.Control/Envoy.Control.csproj
+++ b/src/Envoy.Control/Envoy.Control.csproj
@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.11.4" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.AspNetCore" Version="2.27.0" />
   </ItemGroup>
 
diff --git a/tests/Envoy.Control.Runner/Envoy.Control.Runner.csproj b/tests/Envoy.Control.Runner/Envoy.Control.Runner.csproj
index 4f71069..70c06b3 100644
--- a/tests/Envoy.Control.Runner/Envoy.Control.Runner.csproj
+++ b/tests/Envoy.Control.Runner/Envoy.Control.Runner.csproj
@@ -13,7 +13,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.11.4" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.AspNetCore" Version="2.27.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
   </ItemGroup>