diff --git a/src/bin/build-keycloak-theme/generateKeycloakThemeResources.ts b/src/bin/build-keycloak-theme/generateKeycloakThemeResources.ts
index d2b053b8..6b788342 100644
--- a/src/bin/build-keycloak-theme/generateKeycloakThemeResources.ts
+++ b/src/bin/build-keycloak-theme/generateKeycloakThemeResources.ts
@@ -79,5 +79,10 @@ export function generateKeycloakThemeResources(
 
     });
 
+    fs.writeFileSync(
+        pathJoin(themeDirPath, "theme.properties"),
+        Buffer.from("parent=base\n", "utf8")
+    );
+
 }