diff --git a/index.d.ts b/index.d.ts
index e28e92e..c4ee097 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -6,6 +6,7 @@ import Rewriter = require('./lib/node-rewriter');
 import Streamer = require('./lib/node-streamer');
 import ChunkedPassthrough = require('./lib/chunked-passthrough');
 import Headers = require('./lib/headers');
+import MimeNode = require('./lib/mime-node');
 
 export {
     Splitter,
@@ -13,7 +14,8 @@ export {
     Rewriter,
     Streamer,
     ChunkedPassthrough,
-    Headers
+    Headers,
+    MimeNode
 };
 
 export type {
diff --git a/index.js b/index.js
index 426ee70..61d2416 100644
--- a/index.js
+++ b/index.js
@@ -6,6 +6,7 @@ const NodeRewriter = require('./lib/node-rewriter');
 const NodeStreamer = require('./lib/node-streamer');
 const Headers = require('./lib/headers');
 const ChunkedPassthrough = require('./lib/chunked-passthrough');
+const MimeNode = require('./lib/mime-node');
 
 /** @type {typeof import('.')} */
 module.exports = {
@@ -14,5 +15,6 @@ module.exports = {
     Rewriter: NodeRewriter,
     Streamer: NodeStreamer,
     ChunkedPassthrough,
-    Headers
+    Headers,
+    MimeNode
 };