diff --git a/package.json b/package.json
index 7d54f03..bb68f6c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "casbin",
-  "version": "1.0.7",
+  "version": "1.0.8",
   "description": "An authorization library that supports access control models like ACL, RBAC, ABAC in Node.JS",
   "main": "lib/casbin.js",
   "typings": "lib/casbin.d.ts",
diff --git a/src/casbin.ts b/src/casbin.ts
index cd360b0..02b6a33 100644
--- a/src/casbin.ts
+++ b/src/casbin.ts
@@ -2,3 +2,4 @@ export * from './enforcer';
 export * from './effect';
 export * from './persist';
 export * from './rbac';
+export * from './util';