diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 880de7b..096d494 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -88,9 +88,11 @@ jobs:
 
         - name: Node.js 11.x
           node-version: "11.15"
+          npm-i: mocha@9.2.2
 
         - name: Node.js 12.x
           node-version: "12.22"
+          npm-i: mocha@9.2.2
 
         - name: Node.js 13.x
           node-version: "13.14"
diff --git a/package.json b/package.json
index 2af2dd2..b42fd06 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "eslint-plugin-node": "11.1.0",
     "eslint-plugin-promise": "6.0.0",
     "eslint-plugin-standard": "4.1.0",
-    "mocha": "9.2.2",
+    "mocha": "10.0.0",
     "nyc": "15.1.0"
   },
   "engines": {