diff --git a/deployment/backstage/backstage.yaml b/deployment/backstage/backstage.yaml
index c283b00d..db9eb820 100644
--- a/deployment/backstage/backstage.yaml
+++ b/deployment/backstage/backstage.yaml
@@ -81,7 +81,7 @@ spec:
         - name: cloud-sql-proxy
           # It is recommended to use the latest version of the Cloud SQL Auth Proxy
           # Make sure to update on a regular schedule!
-          image: gcr.io/cloud-sql-connectors/cloud-sql-proxy:2.21.2
+          image: gcr.io/cloud-sql-connectors/cloud-sql-proxy:2.21.3
           restartPolicy: Always # Run as a sidecar container
           args:
             # If connecting from a VPC-native GKE cluster, you can use the