diff --git a/Dockerfile b/Dockerfile
index 7c03f155edfc89103ef6c067acc9aee0c02eb339..0f3993f082da97dc07dcb724bd30a822bed7d007 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 istio/pilot:1.8.6 AS base
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG} 
diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index 6c40371ab740fa82f27ea0b0c389ff5d456ae3ba..4732cb699c6efbe64f83681e9f7ca5eff17ec7e8 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: