diff --git a/modules/watcher/package.json b/modules/watcher/package.json
index 1a9e144064..785f0dd0c1 100644
--- a/modules/watcher/package.json
+++ b/modules/watcher/package.json
@@ -23,7 +23,7 @@
     "@types/chai-as-promised": "7.1.3",
     "@types/chai-subset": "1.3.3",
     "@types/mocha": "8.0.1",
-    "ethereum-waffle": "3.0.2",
+    "ethereum-waffle": "4.0.0",
     "ethers": "5.0.7",
     "evt": "1.8.4",
     "mocha": "8.1.1",