diff --git a/npm/.gitignore b/npm/.gitignore
index 1061704c7..0f9536cec 100644
--- a/npm/.gitignore
+++ b/npm/.gitignore
@@ -4,3 +4,4 @@
 !.gitignore
 !.npmignore
 !README.md
+!middleware.mjs
diff --git a/npm/middleware.mjs b/npm/middleware.mjs
new file mode 100644
index 000000000..f7eb6dc76
--- /dev/null
+++ b/npm/middleware.mjs
@@ -0,0 +1,3 @@
+import cjs from './middleware/index.js';
+
+export default cjs.default;
diff --git a/tasks/webpack/middleware.js b/tasks/webpack/middleware.js
index 3c33942d8..60fb9162a 100644
--- a/tasks/webpack/middleware.js
+++ b/tasks/webpack/middleware.js
@@ -55,6 +55,16 @@ class MiddlewarePackageJsonPlugin {
         },
         type: 'commonjs',
         main: './middleware/index.js',
+        exports: {
+          '.': {
+            import: './middleware.mjs',
+            default: './middleware/index.js',
+          },
+          './middleware': {
+            import: './middleware.mjs',
+            default: './middleware/index.js',
+          },
+        },
         bin: {
           'u-wave-web': './bin/u-wave-web',
         },