diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index fa0d1deb..1aeb4e4e 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -40,7 +40,9 @@ jobs:
         OPENAI_API_KEY: ${{ secrets.OPENAI_KEY }}
         GCP_LOCATION: ${{ secrets.GCP_LOCATION }}
         GCP_PROJECT_ID: ${{ secrets.GCP_PROJECT_ID }}
+        GOOGLE_APPLICATION_CREDENTIALS: gcp-credentials.json
       run: |
+        echo "$GCP_SERVICE_ACCOUNT_API_KEY_BASE64" | base64 --decode | jq > gcp-credentials.json
         make test-cov
     - name: Run notebooks
       env: