diff --git a/Dockerfile b/Dockerfile
index 55a1353..caffaf9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ ARG WAITFOR_VERSION=2.2.4
 RUN curl -vsSLo /tmp/wait-for "https://github.com/eficode/wait-for/releases/download/v${WAITFOR_VERSION}/wait-for"
 RUN chmod +x /tmp/wait-for
 
-FROM google/cloud-sdk:490.0.0
+FROM google/cloud-sdk:491.0.0
 
 ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1