diff --git a/.babelrc b/.babelrc
index 66374129..c13c5f62 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,11 +1,3 @@
 {
-  "presets": ["es2015"],
-  "env": {
-    "test": {
-      "plugins": [
-        "syntax-async-functions",
-        "transform-regenerator"
-      ]
-    }
-  }
+  "presets": ["es2015"]
 }
diff --git a/package.json b/package.json
index db69cced..a7e763f9 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "test-browser-local": "wct --plugin local test/browser/index.html",
     "test-browser-p": "wct --plugin local --persistent test/browser/index.html",
     "test-browser-sauce": "wct --plugin sauce test/browser/index.html",
-    "test-server": "NODE_ENV=test mocha --require babel-core/register --require babel-polyfill test/server",
+    "test-server": "NODE_ENV=test mocha --require babel-core/register test/server",
     "ts-check": "tsc",
     "tslint": "tslint -c tslint.json -t stylish 'lib/index.d.ts'"
   },