diff --git a/package.json b/package.json
index f5e92cd6..48748a2e 100644
--- a/package.json
+++ b/package.json
@@ -93,7 +93,7 @@
     "events": "^3.3.0",
     "microtime": "^3.0.0",
     "mkdirp": "^1.0.4",
-    "protons": "^3.0.3",
+    "protons": "^4.0.0",
     "sinon": "^14.0.0",
     "util": "^0.12.4"
   },