diff --git a/jest.config.cjs b/jest.config.cjs
new file mode 100644
index 0000000..8333297
--- /dev/null
+++ b/jest.config.cjs
@@ -0,0 +1,3 @@
+module.exports = {
+  projects: ['<rootDir>/packages/*/jest.config.cjs'],
+}
diff --git a/jest.config.js b/jest.config.js
deleted file mode 100644
index 1acc735..0000000
--- a/jest.config.js
+++ /dev/null
@@ -1,3 +0,0 @@
-module.exports = {
-  projects: ['<rootDir>/packages/*/jest.config.js'],
-}
diff --git a/jest/create-jest-config.js b/jest/create-jest-config.cjs
similarity index 100%
rename from jest/create-jest-config.js
rename to jest/create-jest-config.cjs
diff --git a/packages/@headlessui-react/jest.config.js b/packages/@headlessui-react/jest.config.cjs
similarity index 50%
rename from packages/@headlessui-react/jest.config.js
rename to packages/@headlessui-react/jest.config.cjs
index 95fe4bf..8dc6875 100644
--- a/packages/@headlessui-react/jest.config.js
+++ b/packages/@headlessui-react/jest.config.cjs
@@ -1,3 +1,2 @@
-const create = require('../../jest/create-jest-config.js')
-
+let create = require('../../jest/create-jest-config.cjs')
 module.exports = create(__dirname, { displayName: 'React' })
diff --git a/packages/@headlessui-vue/jest.config.js b/packages/@headlessui-vue/jest.config.cjs
similarity index 50%
rename from packages/@headlessui-vue/jest.config.js
rename to packages/@headlessui-vue/jest.config.cjs
index 4596442..7dcc0d4 100644
--- a/packages/@headlessui-vue/jest.config.js
+++ b/packages/@headlessui-vue/jest.config.cjs
@@ -1,3 +1,2 @@
-const create = require('../../jest/create-jest-config.js')
-
+let create = require('../../jest/create-jest-config.cjs')
 module.exports = create(__dirname, { displayName: ' Vue ' })