diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2acf300..97db457 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.3.9
+
+-   fix: Type failure
+
 ## 1.3.8
 
 -   types: fix `DeepReadonly` to `Readonly`
diff --git a/package.json b/package.json
index 7034bb8..8b36294 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "vue-class-setup",
-    "version": "1.3.8",
+    "version": "1.3.9",
     "main": "dist/index.cjs.js",
     "module": "dist/index.es.js",
     "types": "dist/index.d.ts",
diff --git a/src/context.ts b/src/context.ts
index ca4e9e1..a826247 100644
--- a/src/context.ts
+++ b/src/context.ts
@@ -151,16 +151,19 @@ export class Context<T extends {} = {}, E extends DefaultEmit = DefaultEmit> {
     public static inject<T extends new (...args: any) => any>(this: T) {
         const _This = this;
 
-        return {
-            setup() {
-                return {} as Omit<InstanceType<T>, '$vm'>;
-            },
+        const options: any = {
             created() {
                 const vm = this as any as VueInstance;
                 const app = use(vm, _This);
                 initInject(app, vm);
             },
         };
+
+        return options as {
+            setup?: () => Omit<InstanceType<T>, '$vm'>;
+            data?: () => Omit<InstanceType<T>, '$vm'>;
+            created(): void;
+        };
     }
     public $vm: VueInstance;
     public $emit: E;