diff --git a/package.json b/package.json
index eb967e7..2e43f81 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@visualbravo/zenstack-cache",
-  "version": "1.0.5",
+  "version": "1.0.6",
   "description": "Reduce response times and database load with query-level caching integrated with the ZenStack ORM.",
   "keywords": [
     "accelerate",
diff --git a/src/plugin.ts b/src/plugin.ts
index 53481eb..79efffc 100644
--- a/src/plugin.ts
+++ b/src/plugin.ts
@@ -59,11 +59,7 @@ export function defineCachePlugin(pluginOptions: CachePluginOptions) {
     onQuery: async ({ args, model, operation, proceed, client }) => {
       if (args && 'cache' in args) {
         const authId = client.$auth
-          ? Object.keys(client.$auth)
-              .filter(key =>
-                client.$schema.models[client.$schema.authType!]!.idFields.includes(key),
-              )
-              .join('_')
+          ? client.$schema.models[client.$schema.authType!]!.idFields.map(key => client.$auth![key])
           : undefined
 
         const json = stableHash({