diff --git a/Dockerfile b/Dockerfile
index dcda8a6ff0e3172ff3062f90d63a4c2eb4047be5..4b1347dd0a8d445ee881bb3151451c66ae728d07 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/operator:1.7.8 AS base
 
diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index 996f266c623a79e29a5e35e5742794e260914a42..c8e05cf4c3c1f14d321be8ee01a73860087b53e7 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: