diff --git a/Dockerfile b/Dockerfile
index d164f2127ccdceb215623cedb8993d2142b82f85..28872fc56d1a4b88a50f07653fc97b0c4769e029 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 quay.io/jetstack/cert-manager-controller:v0.11.0 as base
 
diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index cee070c3a431d6ba04840528878a1973fa2c3744..dd5805e0ddafe69fb3ccadf9e28cf7ccde2e4cee 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: