diff --git a/Dockerfile b/Dockerfile
index 90d79f02..1590f824 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM quay.io/keycloak/keycloak:21.0
+FROM quay.io/keycloak/keycloak:19.0
 COPY testdata data/import
 WORKDIR /opt/keycloak
 ENV KC_HOSTNAME=localhost