diff --git a/requirements.txt b/requirements.txt
index a2019a01a..51eef825a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ google-api-core>=1.2.1,<=1.4.0
 google-cloud-datastore==1.7.0
 google-api-python-client>=1.6.2
 google-cloud-pubsub==0.35.4
-google-cloud-storage
+google-cloud-storage==1.13.0
 google-cloud-core==0.28.1
 oauth2client
 psq