diff --git a/.travis.yml b/.travis.yml
index 7581382..25b18a7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,6 +19,18 @@ before_install:
     if [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 6 ]]; then
       npm rm --slient --save-dev eslint
     fi
+  - |
+    # mocha for testing
+    # - use 2.x for Node.js < 0.10
+    # - use 3.x for Node.js < 4
+    # - use 5.x for Node.js < 6
+    if [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -eq 0 && "$(cut -d. -f2 <<< "$TRAVIS_NODE_VERSION")" -lt 10 ]]; then
+      npm install --save-dev mocha@2.5.3
+    elif [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 4 ]]; then
+      npm install --save-dev mocha@3.5.3
+    elif [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 6 ]]; then
+      npm install --save-dev mocha@5.2.0
+    fi
     # nyc for coverage
     # - remove for Node.js < 6
     if [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 6 ]]; then
diff --git a/appveyor.yml b/appveyor.yml
index 8cb2520..9a0134f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -19,6 +19,19 @@ install:
   - npm config set shrinkwrap false
   # Remove all non-test dependencies
   - npm rm --silent --save-dev eslint nyc
+  # Setup Node.js version-specific dependencies
+  - ps: |
+      # mocha for testing
+      # - use 2.x for Node.js < 0.10
+      # - use 3.x for Node.js < 4
+      # - use 5.x for Node.js < 6
+      if ([int]$env:nodejs_version.split(".")[0] -eq 0 -and [int]$env:nodejs_version.split(".")[1] -lt 10) {
+        npm install --silent --save-dev mocha@2.5.3
+      } elseif ([int]$env:nodejs_version.split(".")[0] -lt 4) {
+        npm install --silent --save-dev mocha@3.5.3
+      } elseif ([int]$env:nodejs_version.split(".")[0] -lt 6) {
+        npm install --silent --save-dev mocha@5.2.0
+      }
   # Install Node.js modules
   - npm install
 build: off
diff --git a/package.json b/package.json
index c792e02..ec0d74b 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "eslint": "5.16.0",
-    "mocha": "2.5.3",
+    "mocha": "6.2.0",
     "nyc": "14.1.1",
     "rimraf": "2.7.1",
     "supertest": "1.1.0"
diff --git a/test/3.x/app.js b/test/3.x/app.js
index 7b680a9..5d6afc8 100644
--- a/test/3.x/app.js
+++ b/test/3.x/app.js
@@ -1,5 +1,6 @@
 var path = require('path')
 var request = require('supertest')
+var utils = require('../support/utils')
 
 var FIXTURES_DIR = path.join(__dirname, '..', 'fixtures')
 
@@ -32,6 +33,11 @@ hbs.registerPartials(__dirname + '/views/partials');
 var app = null
 
 before(function () {
+  if (utils.nodeVersionCompare(10.0) >= 0) {
+    this.skip()
+    return
+  }
+
   var express = require('express')
 
   app = express()
diff --git a/test/4.x/app.js b/test/4.x/app.js
index 822a259..02205ab 100644
--- a/test/4.x/app.js
+++ b/test/4.x/app.js
@@ -1,5 +1,6 @@
 var path = require('path')
 var request = require('supertest')
+var utils = require('../support/utils')
 
 var FIXTURES_DIR = path.join(__dirname, '..', 'fixtures')
 
@@ -32,6 +33,11 @@ hbs.registerPartials(__dirname + '/views/partials');
 var app = null
 
 before(function () {
+  if (utils.nodeVersionCompare(0.10) <= 0) {
+    this.skip()
+    return
+  }
+
   var express = require('express')
 
   app = express()