diff --git a/Dockerfile b/Dockerfile
index 6ed3dc98070d45c3c62edf4993c9a2f36b41ee17..b323aaa9e107144884f24d5de982e906374ffacc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # Build the intermediate container
 ARG BASE_REGISTRY=registry1.dso.mil
 ARG BASE_IMAGE=ironbank/redhat/ubi/ubi8
-ARG BASE_TAG=8.3
+ARG BASE_TAG=8.4
 FROM kubeflow-images-public/admission-webhook:v20190520-v0-139-gcee39dbc-dirty-0d8f4c AS base
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
 RUN mkdir -p /app
diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index ba00538b8d1ba75b5d3feba60fd604abc53a7599..56c015339f8dcf4c545a52091423114116db7aaf 100644
--- a/hardening_manifest.yaml
+++ b/hardening_manifest.yaml
@@ -10,7 +10,7 @@ tags:
 # Build args passed to Dockerfile ARGs
 args:
   BASE_IMAGE: "redhat/ubi/ubi8"
-  BASE_TAG: "8.3"
+  BASE_TAG: "8.4"
 
 # Docker image labels
 labels: