diff --git a/.aegir.js b/.aegir.js
deleted file mode 100644
index 55dc385..0000000
--- a/.aegir.js
+++ /dev/null
@@ -1,11 +0,0 @@
-'use strict'
-
-module.exports = {
-  webpack: {
-    resolve: {
-    },
-    externals: {
-      'simple-websocket-server': '{}'
-    }
-  }
-}
diff --git a/package.json b/package.json
index 45878e5..2404020 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,9 @@
     "url": "https://github.com/libp2p/js-libp2p-spdy/issues"
   },
   "homepage": "https://github.com/libp2p/js-libp2p-spdy",
+  "browser": {
+    "zlib": "browserify-zlib"
+  },
   "devDependencies": {
     "aegir": "^8.0.1",
     "chai": "^3.5.0",