diff --git a/packages/google-cloud-dns/.circleci/config.yml b/packages/google-cloud-dns/.circleci/config.yml
index f9592833829..d17d4a2a527 100644
--- a/packages/google-cloud-dns/.circleci/config.yml
+++ b/packages/google-cloud-dns/.circleci/config.yml
@@ -174,6 +174,10 @@ jobs:
           name: Install and link the module.
           command: |
             npm install
+            repo_tools="node_modules/@google-cloud/nodejs-repo-tools/bin/tools"
+            if ! test -x "$repo_tools"; then
+              chmod +x "$repo_tools"
+            fi
             npm link
       - run:
           name: Link the module being tested to the samples.
@@ -207,7 +211,12 @@ jobs:
                 -k "${SYSTEM_TESTS_ENCRYPTION_KEY}"
       - run:
           name: Install modules and dependencies.
-          command: npm install
+          command: |-
+            npm install
+            repo_tools="node_modules/@google-cloud/nodejs-repo-tools/bin/tools"
+            if ! test -x "$repo_tools"; then
+              chmod +x "$repo_tools"
+            fi
       - run:
           name: Run system tests.
           command: npm run system-test