diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index c286b42537a4dd711f3bcc4aebba0ddf84ba3696..6e9c7eb8f52cd76074bf2f42f3f97d1dba1be42d 100644
--- a/hardening_manifest.yaml
+++ b/hardening_manifest.yaml
@@ -14,7 +14,7 @@ tags:
 # Build args passed to Dockerfile ARGs
 args:
   BASE_IMAGE: "opensource/python/python39"
-  BASE_TAG: "3.9.4"
+  BASE_TAG: "v3.9.4"
 
 # Docker image labels
 labels: