diff --git a/lib/index.ts b/lib/index.ts
index 19825dd96e..97f702717a 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -272,7 +272,9 @@ export class Server extends EventEmitter {
 
     const escapedPath = this._path.replace(/[-\/\\^$*+?.()|[\]{}]/g, "\\$&");
     this.clientPathRegex = new RegExp(
-      "^" + escapedPath + "/socket\\.io(\\.min)?\\.js(\\.map)?$"
+      "^" +
+        escapedPath +
+        "/socket\\.io(\\.min|\\.msgpack\\.min)?\\.js(\\.map)?$"
     );
     return this;
   }
diff --git a/package.json b/package.json
index 4cc5b296a4..5d8170659b 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
   ],
   "files": [
     "dist/",
+    "client-dist/",
     "wrapper.mjs"
   ],
   "type": "commonjs",
diff --git a/test/socket.io.ts b/test/socket.io.ts
index 397bd46c5b..bc7377bce9 100644
--- a/test/socket.io.ts
+++ b/test/socket.io.ts
@@ -92,6 +92,16 @@ describe("socket.io", () => {
           });
       });
 
+      it(
+        "should serve bundle with msgpack parser",
+        testSource("socket.io.msgpack.min.js")
+      );
+
+      it(
+        "should serve source map for bundle with msgpack parser",
+        testSourceMap("socket.io.msgpack.min.js.map")
+      );
+
       it("should handle 304", done => {
         const srv = createServer();
         new Server(srv);