diff --git a/scripts/ci/install.sh b/scripts/ci/install.sh
index ab1a715fe..dfbe394a8 100644
--- a/scripts/ci/install.sh
+++ b/scripts/ci/install.sh
@@ -28,5 +28,4 @@ if [[ "$TRAVIS_PULL_REQUEST" == "false" && \
 	aws configure set region us-east-2
 
 	openssl enc -d -aes-256-cbc -md md5 -k $GCP_CREDS -in scripts/ci/gcp-creds.json.enc -out scripts/ci/gcp-creds.json
-        gcloud auth activate-service-account --key-file scripts/ci/gcp-creds.json
 fi
diff --git a/tests/test_repro.py b/tests/test_repro.py
index 9eee2f4b0..d70a0a3bf 100644
--- a/tests/test_repro.py
+++ b/tests/test_repro.py
@@ -957,7 +957,7 @@ class TestReproExternalGS(TestReproExternalBase):
         return "gsutil cp {} {}".format(i, o)
 
     def write(self, bucket, key, body):
-        client = gc.Client()
+        client = gc.Client.from_service_account_json(self.GCP_CREDS_FILE)
         bucket = client.bucket(bucket)
         bucket.blob(key).upload_from_string(body)