diff --git a/Dockerfile b/Dockerfile
index cb4d60e1f65e22f93db4c45b064a850d063b563b..61f51d4e1f2bc5db37e9c67bfdc8dbbd3171cfa2 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 ml-pipeline/envoy:metadata-grpc AS base
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
 RUN mkdir -p /etc/envoy
diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index 60bd8382fc1d41b5478056d91f531b73ce029943..19f7fca4a5cce2e28781057d2cadf0eadba1b170 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: