diff --git a/node_modules/diff/package.json b/node_modules/diff/package.json
index 4ff484e883..6fd3545205 100644
--- a/node_modules/diff/package.json
+++ b/node_modules/diff/package.json
@@ -48,7 +48,7 @@
     "grunt-contrib-copy": "^1.0.0",
     "grunt-contrib-uglify": "^4.0.0",
     "grunt-contrib-watch": "^1.1.0",
-    "grunt-eslint": "^21.0.0",
+    "grunt-eslint": "^25.0.0",
     "grunt-exec": "^3.0.0",
     "grunt-karma": "^3.0.1",
     "grunt-mocha-istanbul": "^5.0.2",