diff --git a/Dockerfile b/Dockerfile
index 43ec35b60d82ffb7935628eb669ebc77daeea037..f117caeeb0672a2ff29ae7c50e0282bdd92959b8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 ARG BASE_REGISTRY=registry1.dsop.io
 ARG BASE_IMAGE=ironbank/redhat/ubi/ubi8
-ARG BASE_TAG=8.3
+ARG BASE_TAG=8.4
 
 FROM istio/istioctl:1.7.8 AS base
 
diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index de0222952f2887f976daeac676e0948cda82f1e7..019705c6cab11d6e0b00356a7946937a9b018b2a 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: