diff --git a/rewriter/package.json b/rewriter/package.json
index 154cf45a3426..a1a68792908f 100644
--- a/rewriter/package.json
+++ b/rewriter/package.json
@@ -2,7 +2,7 @@
   "name": "https-everywhere-rewriter",
   "version": "1.0.0",
   "dependencies": {
-    "event-stream": "3.0.20",
+    "event-stream": "3.3.5",
     "readdirp": "0.3.2",
     "urijs": "^1.18.1",
     "xmldom": "0.1.17"