diff --git a/cc/config/tidy.go b/cc/config/tidy.go
index 1180da4..d55a13d 100644
--- a/cc/config/tidy.go
+++ b/cc/config/tidy.go
@@ -40,6 +40,8 @@
 		"-cert-err33-c",
 		// http://b/241125373
 		"-bugprone-unchecked-optional-access",
+		// http://b/265438407
+		"-misc-use-anonymous-namespace",
 	}
 
 	// Some clang-tidy checks are included in some tidy_checks_as_errors lists,