diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index c2916478c..27b51cdf4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -73,6 +73,7 @@ jobs:
     - uses: actions/setup-go@v4
       with:
         go-version: '>=1.20.2'
+    - run: chmod +x .kokoro/trampoline_cleanup.sh
     - run: npm install
     - run: go version
     - run: .kokoro/conformance.sh