diff --git a/build.gradle b/build.gradle
index 43d9fd7..5018443 100644
--- a/build.gradle
+++ b/build.gradle
@@ -21,7 +21,7 @@ version = '0.0.1-SNAPSHOT'
 description = 'last-login-event-listener'
 
 ext {
-    keycloakVersion = "24.0.2"
+    keycloakVersion = "23.0.6"
 }