diff --git a/.circleci/config.yml b/.circleci/config.yml
index aafcb37..e4b1fa2 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,17 +3,15 @@ workflows:
   version: 2
   test:
     jobs:
-      - node6
-      - node8
       - node10
-      - node11
+      - node12
+      - node13
       - lint
       - publish_npm:
           requires:
-            - node6
-            - node8
             - node10
-            - node11
+            - node12
+            - node13
             - lint
           filters:
             branches:
@@ -26,36 +24,31 @@ unit_tests: &unit_tests
     - run: npm test
 
 jobs:
-  node6:
-    docker:
-      - image: node:6
-        user: node
-    <<: *unit_tests
-  node8:
+  node10:
     docker:
-      - image: node:8
+      - image: node:10
         user: node
     <<: *unit_tests
-  node10:
+  node12:
     docker:
-      - image: node:10
+      - image: node:12
         user: node
     <<: *unit_tests
-  node11:
+  node13:
     docker:
-      - image: node:11
+      - image: node:13
         user: node
     <<: *unit_tests
   lint:
     docker:
-      - image: node:11
+      - image: node:13
     steps:
       - checkout
       - run: npm install
       - run: npm run lint
   coverage:
     docker:
-      - image: node:11
+      - image: node:13
     steps:
       - checkout
       - run: npm install
@@ -63,7 +56,7 @@ jobs:
       - run: npm run coverage
   publish_npm:
     docker:
-      - image: node:11
+      - image: node:13
     steps:
       - checkout
       - run: npm install
diff --git a/example/app.js b/example/app.js
index bf821f4..1598517 100644
--- a/example/app.js
+++ b/example/app.js
@@ -6,8 +6,8 @@ const app = express();
 // Use the yes-https connect middleware.  Note - this will only work if NODE_ENV is set to production.
 app.use(yes());
 
-app.get('/', (req, res) => {
-	res.end('Thanks for checking it out!');
+app.get('/', (request, response) => {
+	response.end('Thanks for checking it out!');
 });
 
 const server = app.listen(process.env.PORT || 3000, () => {
diff --git a/lib/index.js b/lib/index.js
index b0d924a..663df1a 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -3,12 +3,12 @@ module.exports = function (options) {
 	const maxAge = options.maxAge ? options.maxAge : 86400;
 	const includeSubDomains = options.includeSubDomains === undefined ? true : options.includeSubdomains;
 
-	return function (req, res, next) {
+	return function (request, response, next) {
 		let ignoreRequest = (process.env.NODE_ENV !== 'production');
-		const secure = req.connection.encrypted || (req.get('X-Forwarded-Proto') === 'https');
+		const secure = request.connection.encrypted || (request.get('X-Forwarded-Proto') === 'https');
 
 		if (options.ignoreFilter) {
-			ignoreRequest = ignoreRequest || options.ignoreFilter(req);
+			ignoreRequest = ignoreRequest || options.ignoreFilter(request);
 		}
 
 		if (ignoreRequest) {
@@ -26,13 +26,13 @@ module.exports = function (options) {
 				header += '; preload';
 			}
 
-			res.setHeader('Strict-Transport-Security', header);
+			response.setHeader('Strict-Transport-Security', header);
 			next();
 		} else {
-			res.writeHead(301, {
-				Location: 'https://' + req.get('host') + req.url
+			response.writeHead(301, {
+				Location: 'https://' + request.get('host') + request.url
 			});
-			res.end();
+			response.end();
 		}
 	};
 };
diff --git a/package.json b/package.json
index 97ef033..9ca1d32 100644
--- a/package.json
+++ b/package.json
@@ -23,11 +23,10 @@
   },
   "homepage": "https://github.com/JustinBeckwith/yes-https#readme",
   "devDependencies": {
-    "express": "^4.16.3",
-    "mocha": "^6.0.0",
-    "request": "^2.87.0",
-    "supertest": "^4.0.0",
-    "xo": "^0.27.0"
+    "express": "^4.17.1",
+    "mocha": "^7.1.1",
+    "supertest": "^4.0.2",
+    "xo": "^0.29.0"
   },
   "xo": {
     "overrides": [
@@ -36,5 +35,8 @@
         "env": "mocha"
       }
     ]
+  },
+  "engines": {
+    "node": ">=10"
   }
 }
diff --git a/test/test.js b/test/test.js
index ce7cf07..9663d4d 100644
--- a/test/test.js
+++ b/test/test.js
@@ -11,8 +11,8 @@ describe('yes', () => {
 		// Configure a minimal web server with the defaults
 		const app = express();
 		app.use(yes());
-		app.get('/test', (req, res) => {
-			res.sendStatus(200);
+		app.get('/test', (request_, response) => {
+			response.sendStatus(200);
 		});
 
 		// Verify the request returns a 301
@@ -32,8 +32,8 @@ describe('yes', () => {
 		// Configure a minimal web server with the defaults
 		const app = express();
 		app.use(yes());
-		app.get('/test', (req, res) => {
-			res.sendStatus(200);
+		app.get('/test', (_request, response) => {
+			response.sendStatus(200);
 		});
 
 		// Verify the request returns the right header when using https
@@ -56,13 +56,13 @@ describe('yes', () => {
 		// Configure a minimal web server with the defaults
 		const app = express();
 		app.use(yes({
-			ignoreFilter: req => {
-				return (req.url.includes('/_ah/health'));
+			ignoreFilter: request_ => {
+				return (request_.url.includes('/_ah/health'));
 			}
 		}));
 
-		app.get('/_ah/health', (req, res) => {
-			res.sendStatus(200);
+		app.get('/_ah/health', (_request, response) => {
+			response.sendStatus(200);
 		});
 
 		// Verify the request returns a 200 for health checks