diff --git a/packages/@vue/cli-plugin-unit-mocha/package.json b/packages/@vue/cli-plugin-unit-mocha/package.json
index 67b8759e0f..c85ca4d361 100644
--- a/packages/@vue/cli-plugin-unit-mocha/package.json
+++ b/packages/@vue/cli-plugin-unit-mocha/package.json
@@ -25,7 +25,7 @@
     "@vue/cli-shared-utils": "^4.1.2",
     "jsdom": "^15.2.1",
     "jsdom-global": "^3.0.2",
-    "mocha": "^6.2.2",
+    "mocha": "^9.1.2",
     "mochapack": "^1.1.12"
   },
   "devDependencies": {