diff --git a/package-lock.json b/package-lock.json
index 9b82ecb..839b669 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -128,17 +128,6 @@
         "@types/node": "*"
       }
     },
-    "@types/express": {
-      "version": "4.17.6",
-      "resolved": "https://registry.npmjs.org/@types/express/-/express-4.17.6.tgz",
-      "integrity": "sha512-n/mr9tZI83kd4azlPG5y997C/M4DNABK9yErhFM6hKdym4kkmd9j0vtsJyjFIwfRBxtrxZtAfGZCNRIBMFLK5w==",
-      "requires": {
-        "@types/body-parser": "*",
-        "@types/express-serve-static-core": "*",
-        "@types/qs": "*",
-        "@types/serve-static": "*"
-      }
-    },
     "@types/express-serve-static-core": {
       "version": "4.17.5",
       "resolved": "https://registry.npmjs.org/@types/express-serve-static-core/-/express-serve-static-core-4.17.5.tgz",
diff --git a/package.json b/package.json
index 3bc1031..4753647 100644
--- a/package.json
+++ b/package.json
@@ -16,10 +16,13 @@
     "@apidevtools/json-schema-ref-parser": "^8.0.0",
     "@hapi/joi": "^17.1.1",
     "@types/bcrypt": "^3.0.0",
-    "@types/express": "^4.17.6",
+    "@types/body-parser": "^1.19.0",
+    "@types/express-serve-static-core": "^4.17.5",
     "@types/mocha": "^5.2.7",
     "@types/mongoose": "^5.7.12",
     "@types/node": "^13.1.6",
+    "@types/qs": "^6.9.1",
+    "@types/serve-static": "^1.13.3",
     "axios": "^0.19.2",
     "basic-auth": "^2.0.1",
     "bcryptjs": "^2.4.3",
diff --git a/src/customTypes/express.ts b/src/customTypes/express.ts
new file mode 100644
index 0000000..361c961
--- /dev/null
+++ b/src/customTypes/express.ts
@@ -0,0 +1,116 @@
+// Type definitions for Express 4.17
+// Project: http://expressjs.com
+// Definitions by: Boris Yankov <https://github.com/borisyankov>
+//                 China Medical University Hospital <https://github.com/CMUH>
+//                 Puneet Arora <https://github.com/puneetar>
+//                 Dylan Frankland <https://github.com/dfrankland>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
+
+/* =================== USAGE ===================
+
+    import * as express from "express";
+    var app = express();
+
+ =============================================== */
+
+/// <reference types="express-serve-static-core" />
+/// <reference types="serve-static" />
+
+import * as bodyParser from "body-parser";
+import serveStatic = require("serve-static");
+import * as core from "express-serve-static-core";
+import * as qs from "qs";
+
+/**
+ * Creates an Express application. The express() function is a top-level function exported by the express module.
+ */
+declare function e(): core.Express;
+
+declare namespace e {
+    /**
+     * This is a built-in middleware function in Express. It parses incoming requests with JSON payloads and is based on body-parser.
+     * @since 4.16.0
+     */
+    var json: typeof bodyParser.json;
+
+    /**
+     * This is a built-in middleware function in Express. It parses incoming requests with Buffer payloads and is based on body-parser.
+     * @since 4.17.0
+     */
+    var raw: typeof bodyParser.raw;
+
+    /**
+     * This is a built-in middleware function in Express. It parses incoming requests with text payloads and is based on body-parser.
+     * @since 4.17.0
+     */
+    var text: typeof bodyParser.text;
+
+    /**
+     * These are the exposed prototypes.
+     */
+    var application: Application;
+    var request: Request;
+    var response: Response;
+
+    /**
+     * This is a built-in middleware function in Express. It serves static files and is based on serve-static.
+     */
+    var static: typeof serveStatic;
+
+    /**
+     * This is a built-in middleware function in Express. It parses incoming requests with urlencoded payloads and is based on body-parser.
+     * @since 4.16.0
+     */
+    var urlencoded: typeof bodyParser.urlencoded;
+
+    /**
+     * This is a built-in middleware function in Express. It parses incoming request query parameters.
+     */
+    export function query(options: qs.IParseOptions | typeof qs.parse): Handler;
+
+    export function Router(options?: RouterOptions): core.Router;
+
+    interface RouterOptions {
+        /**
+         * Enable case sensitivity.
+         */
+        caseSensitive?: boolean;
+
+        /**
+         * Preserve the req.params values from the parent router.
+         * If the parent and the child have conflicting param names, the child’s value take precedence.
+         *
+         * @default false
+         * @since 4.5.0
+         */
+        mergeParams?: boolean;
+
+        /**
+         * Enable strict routing.
+         */
+        strict?: boolean;
+    }
+
+    interface Application extends core.Application { }
+    interface CookieOptions extends core.CookieOptions { }
+    interface Errback extends core.Errback { }
+    interface ErrorRequestHandler<P extends core.Params = core.ParamsDictionary, ResBody = any, ReqBody = any, ReqQuery = core.Query>
+        extends core.ErrorRequestHandler<P, ResBody, ReqBody, ReqQuery> { }
+    interface Express extends core.Express { }
+    interface Handler extends core.Handler { }
+    interface IRoute extends core.IRoute { }
+    interface IRouter extends core.IRouter { }
+    interface IRouterHandler<T> extends core.IRouterHandler<T> { }
+    interface IRouterMatcher<T> extends core.IRouterMatcher<T> { }
+    interface MediaType extends core.MediaType { }
+    interface NextFunction extends core.NextFunction { }
+    interface Request<P extends core.Params = core.ParamsDictionary, ResBody = any, ReqBody = any, ReqQuery = core.Query> extends core.Request<P, ResBody, ReqBody, ReqQuery> { }
+    interface RequestHandler<P extends core.Params = core.ParamsDictionary, ResBody = any, ReqBody = any, ReqQuery = core.Query> extends core.RequestHandler<P, ResBody, ReqBody, ReqQuery> { }
+    interface RequestParamHandler extends core.RequestParamHandler { }
+    export interface Response<ResBody = any> extends core.Response<ResBody> { }
+    interface Router extends core.Router { }
+    interface Send extends core.Send { }
+}
+
+export = e;
diff --git a/tsconfig.json b/tsconfig.json
index 304952d..8bbe445 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,7 +5,11 @@
     "outDir": "dist",
     "sourceMap": true,
     "esModuleInterop": true,
-    "resolveJsonModule": true
+    "resolveJsonModule": true,
+    "typeRoots": [
+      "src/customTypings",
+      "node_modules/@types"
+    ]
   },
   "files": [
     "./node_modules/@types/node/index.d.ts"