diff --git a/Dockerfile b/Dockerfile
index 0addf49..8730b9a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 ARG IAM_FLAVOUR=public
-FROM quay.io/keycloak/keycloak:21.1.0 as base-image
+FROM quay.io/keycloak/keycloak:20.0.5 as base-image
 
 # Enables Features for Admin Flavour of IAM Image
 FROM base-image as builder-admin