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.Tests/Envoy.Control.Tests.csproj b/tests/Envoy.Control.Tests/Envoy.Control.Tests.csproj
index 0c25ee8..b670a74 100644
--- a/tests/Envoy.Control.Tests/Envoy.Control.Tests.csproj
+++ b/tests/Envoy.Control.Tests/Envoy.Control.Tests.csproj
@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Google.Api.CommonProtos" Version="1.7.0" />
-    <PackageReference Include="Google.Protobuf" Version="3.11.4" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="FluentAssertions" Version="5.9.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
     <PackageReference Include="NSubstitute" Version="4.2.1" />