diff --git a/packages/google-cloud-dns/.eslintrc.yml b/packages/google-cloud-dns/.eslintrc.yml
index 65f1dce6c0c..73eeec27612 100644
--- a/packages/google-cloud-dns/.eslintrc.yml
+++ b/packages/google-cloud-dns/.eslintrc.yml
@@ -12,3 +12,4 @@ rules:
   eqeqeq: error
   no-warning-comments: warn
   no-var: error
+  prefer-const: error