diff --git a/package.json b/package.json
index 98b64cd..d3ee17a 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "0.2.31",
   "description": "swc integration for jest",
   "main": "index.js",
+  "types": "index.d.ts",
   "homepage": "https://github.com/swc-project/jest",
   "scripts": {
     "build": "npm run lint && tsc",
@@ -43,7 +44,8 @@
     "npm": ">= 7.0.0"
   },
   "files": [
-    "index.js"
+    "index.js",
+    "index.d.ts"
   ],
   "workspaces": [
     "examples/react"
diff --git a/tsconfig.json b/tsconfig.json
index b61cb6b..29e846e 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -10,7 +10,7 @@
     // "allowJs": true,                       /* Allow javascript files to be compiled. */
     // "checkJs": true,                       /* Report errors in .js files. */
     // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
-    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    "declaration": true, /* Generates corresponding '.d.ts' file. */
     // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
     // "sourceMap": true,                     /* Generates corresponding '.map' file. */
     // "outFile": "./",                       /* Concatenate and emit output to single file. */