diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8fd12b55c6c1890d76957a722a1bcd41f23d6de1..205508852f1ee420fe46a272b9dbebcc360fa062 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -41,7 +41,7 @@ check-gke:
   before_script:
     - |
       cd $TF_ROOT_GKE
-      echo $GCP_SA > gcp-sa.json
+      echo $GCP_SA | base64 -d > gcp-sa.json
   script:
     - |
       gitlab-terraform init