diff --git a/.changeset/hungry-seas-yell.md b/.changeset/hungry-seas-yell.md
new file mode 100644
index 00000000..9241b57f
--- /dev/null
+++ b/.changeset/hungry-seas-yell.md
@@ -0,0 +1,5 @@
+---
+'@hono/zod-openapi': patch
+---
+
+fix: publish as cjs by default
diff --git a/packages/zod-openapi/package.json b/packages/zod-openapi/package.json
index e69aad1f..dffc27b9 100644
--- a/packages/zod-openapi/package.json
+++ b/packages/zod-openapi/package.json
@@ -1,8 +1,7 @@
 {
   "name": "@hono/zod-openapi",
-  "version": "0.6.0",
+  "version": "0.7.1",
   "description": "A wrapper class of Hono which supports OpenAPI.",
-  "type": "module",
   "main": "dist/index.js",
   "module": "dist/index.mjs",
   "types": "dist/index.d.ts",
@@ -15,6 +14,13 @@
     "publint": "publint",
     "release": "yarn build && yarn test && yarn publint && yarn publish"
   },
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.mts",
+      "import": "./dist/index.mjs",
+      "require": "./dist/index.js"
+    }
+  },
   "license": "MIT",
   "private": false,
   "publishConfig": {
@@ -31,15 +37,15 @@
     "zod": "3.*"
   },
   "devDependencies": {
-    "@hono/zod-validator": "^0.1.8",
+    "@hono/zod-validator": "^0.1.9",
     "hono": "^3.7.2",
     "zod": "^3.22.1"
   },
   "dependencies": {
     "@asteasolutions/zod-to-openapi": "^5.5.0",
-    "@hono/zod-validator": "^0.1.8"
+    "@hono/zod-validator": "^0.1.9"
   },
   "engines": {
     "node": ">=16.0.0"
   }
-}
\ No newline at end of file
+}