diff --git a/package.json b/package.json
index 8abb044..a4e3d50 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,10 @@
       "import": {
         "node": "./dist/index.js",
         "default": "./dist/index.js"
+      },
+      "require": {
+        "node": "./dist/index.cjs",
+        "default": "./dist/index.cjs"
       }
     }
   },
diff --git a/tsconfig.json b/tsconfig.json
index 43abd60..a484180 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -11,4 +11,4 @@
     "resolveJsonModule": true,
   },
   "exclude": ["node_modules"]
-}
+}
\ No newline at end of file
diff --git a/tsup.config.ts b/tsup.config.ts
index 25564ef..a90cf34 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -15,7 +15,7 @@ export default defineConfig({
     "safari17",
     "node20",
   ],
-  format: ["esm"],
+  format: ["esm", "cjs"],
   skipNodeModulesBundle: true,
   external: ["node_modules"],
 });