diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e29004c274f..9ef7ef57ee9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -70,6 +70,10 @@ jobs:
       - name: Install dependencies
         run: npm install
 
+      - name: Use Mocha 11 on Node versions Mocha 12 does not support
+        if: ${{ matrix.node-version == 18 || matrix.node-version == 19 || matrix.node-version == 21 }}
+        run: npm install --no-save mocha@11
+
       - name: Output Node and NPM versions
         run: |
           echo "Node.js version: $(node -v)"
diff --git a/package.json b/package.json
index a7fae5a21b0..997caa91a13 100644
--- a/package.json
+++ b/package.json
@@ -72,7 +72,7 @@
     "hbs": "4.3.1",
     "marked": "^15.0.3",
     "method-override": "3.0.0",
-    "mocha": "^11.7.5",
+    "mocha": "^12.0.3",
     "morgan": "1.12.1",
     "nyc": "^17.1.0",
     "pbkdf2-password": "1.2.1",