diff --git a/Dockerfile b/Dockerfile
index f886555..e29b0ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM gcr.io/google.com/cloudsdktool/cloud-sdk:419.0.0
+FROM gcr.io/google.com/cloudsdktool/cloud-sdk:328.0.0
 
 RUN apt-get install -qqy unzip