diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6c2131c..744aa95 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -82,9 +82,11 @@ jobs:
 
         - name: Node.js 10.x
           node-version: "10.24"
+          npm-i: mocha@8.4.0
 
         - name: Node.js 11.x
           node-version: "11.15"
+          npm-i: mocha@8.4.0
 
         - name: Node.js 12.x
           node-version: "12.22"
diff --git a/package.json b/package.json
index d7c9707..4c89d80 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "eslint": "7.32.0",
     "eslint-plugin-markdown": "2.2.1",
     "finalhandler": "1.1.2",
-    "mocha": "8.4.0",
+    "mocha": "9.1.3",
     "nyc": "15.1.0",
     "safe-buffer": "5.2.1",
     "supertest": "6.1.6"