diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index cbb015877cbd298e0c0f14da464ea5f63650eb0d..8aef53167106f8934a6bd65dc95079d539c3bb2f 100644
--- a/hardening_manifest.yaml
+++ b/hardening_manifest.yaml
@@ -14,7 +14,7 @@ tags:
 # Build args passed to Dockerfile ARGs
 args:
   BASE_IMAGE: "carnegie-mellon/python-ai/python38-ai"
-  BASE_TAG: "latest"
+  BASE_TAG: "3.8"
 
 # Docker image labels
 labels: