diff --git a/package.json b/package.json
index ca569c0737..0125dfb3f7 100644
--- a/package.json
+++ b/package.json
@@ -164,7 +164,7 @@
     "eslint-plugin-mocha": "^5.0.0",
     "eventsource-polyfill": "^0.9.6",
     "expect.js": "^0.3.1",
-    "http-proxy-middleware": "^0.19.0",
+    "http-proxy-middleware": "^0.20.0",
     "istanbul": "^1.1.0-alpha.1",
     "karma": "^4.0.1",
     "karma-babel-preprocessor": "^7.0.0",