diff --git a/Dockerfile b/Dockerfile
index 96a4f00d5b4cb979ec1e6cb06fdead904c2a8b69..3db7813c300d6725cc5743c9621dad67e7afb92a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 ARG BASE_REGISTRY=registry1.dso.mil
 ARG BASE_IMAGE=ironbank/redhat/ubi/ubi8
-ARG BASE_TAG=8.3
+ARG BASE_TAG=8.4
 FROM arrikto/kubeflow/oidc-authservice:6ac9400 AS base
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
 ENV LANG C.UTF-8
diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index 5a7dffc4c10dacac6f797fc14e7e3999ba628d87..5457e291d5b97f86b4ad920820e10ba54ab5c728 100644
--- a/hardening_manifest.yaml
+++ b/hardening_manifest.yaml
@@ -14,7 +14,7 @@ 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: