diff --git a/appengine/cloudtasks/package.json b/appengine/cloudtasks/package.json
index 8eb6adfa4d..1d219e2430 100644
--- a/appengine/cloudtasks/package.json
+++ b/appengine/cloudtasks/package.json
@@ -23,7 +23,7 @@
     "body-parser": "1.18.2",
     "express": "4.16.2",
     "googleapis": "22.2.0",
-    "yargs": "10.0.3"
+    "yargs": "15.0.1"
   },
   "devDependencies": {
     "@google-cloud/nodejs-repo-tools": "2.1.1",