diff --git a/cc/proto_test.go b/cc/proto_test.go
index f8bbd26..2d059eb 100644
--- a/cc/proto_test.go
+++ b/cc/proto_test.go
@@ -22,6 +22,7 @@
 )
 
 func TestProto(t *testing.T) {
+	t.Parallel()
 	t.Run("simple", func(t *testing.T) {
 		ctx := testCc(t, `
 		cc_library_shared {