diff --git a/roles/keycloak_quarkus/defaults/main.yml b/roles/keycloak_quarkus/defaults/main.yml
index b4d5a37..8b7c16d 100644
--- a/roles/keycloak_quarkus/defaults/main.yml
+++ b/roles/keycloak_quarkus/defaults/main.yml
@@ -125,19 +125,19 @@ keycloak_quarkus_db_user: keycloak-user
 keycloak_quarkus_db_pass: keycloak-pass
 keycloak_quarkus_db_url: "{{ keycloak_quarkus_default_jdbc[keycloak_quarkus_db_engine].url }}"
 keycloak_quarkus_db_driver_version: "{{ keycloak_quarkus_default_jdbc[keycloak_quarkus_db_engine].version }}"
-# override the variables above, following defaults show minimum supported versions
+# override the variables above, following defaults show recommended version as per
+# https://access.redhat.com/articles/7033107
 keycloak_quarkus_default_jdbc:
   postgres:
     url: 'jdbc:postgresql://localhost:5432/keycloak'
-    version: 9.4.1212
+    version: 42.7.5
   mariadb:
     url: 'jdbc:mariadb://localhost:3306/keycloak'
-    version: 2.7.4
+    version: 3.5.2
   mssql:
     url: 'jdbc:sqlserver://localhost:1433;databaseName=keycloak;'
     version: 12.8.1
     driver_jar_url: "https://repo1.maven.org/maven2/com/microsoft/sqlserver/mssql-jdbc/12.8.1.jre11/mssql-jdbc-12.8.1.jre11.jar"
-    # cf. https://docs.redhat.com/en/documentation/red_hat_build_of_keycloak/26.0/html-single/server_configuration_guide/index#db-installing-the-microsoft-sql-server-driver
 ### logging configuration
 keycloak_quarkus_log: file
 keycloak_quarkus_log_level: info