diff --git a/package.json b/package.json
index 1a33e485..c81bf33c 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "devDependencies": {
     "@google/clasp": "2.3.2",
     "chai": "4.2.0",
-    "del": "1.2.1",
+    "del": "2.0.0",
     "eslint": "4.19.1",
     "eslint-config-google": "0.14.0",
     "fibers": "5.0.0",
@@ -29,7 +29,7 @@
     "gulp-expose": "0.0.7",
     "gulp-rename": "2.0.0",
     "jsdoc": "3.6.4",
-    "mocha": "9.0.0",
+    "mocha": "10.6.0",
     "urlsafe-base64": "1.0.0"
   },
   "scripts": {