diff --git a/contrib/golang/router/cluster_specifier/test/test_data/simple/go.mod b/contrib/golang/router/cluster_specifier/test/test_data/simple/go.mod
index 5ec718d9cfc0..d43f5df99734 100644
--- a/contrib/golang/router/cluster_specifier/test/test_data/simple/go.mod
+++ b/contrib/golang/router/cluster_specifier/test/test_data/simple/go.mod
@@ -15,7 +15,7 @@ require (
 require (
 	github.com/envoyproxy/protoc-gen-validate v1.0.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
-	google.golang.org/protobuf v1.32.0
+	google.golang.org/protobuf v1.33.0
 )
 
 replace github.com/envoyproxy/envoy => ../../../../../../../