diff --git a/package-lock.json b/package-lock.json
index 9d58bb3..4c0d28e 100644
--- a/package-lock.json
+++ b/package-lock.json
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-        "send": "0.16.2"
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@@ -7452,6 +7407,7 @@
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@@ -7520,15 +7476,15 @@
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@@ -7558,9 +7514,9 @@
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@@ -7568,18 +7524,18 @@
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-      "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
+      "version": "4.5.0",
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-          "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo=",
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@@ -7827,31 +7783,28 @@
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+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-8.3.0.tgz",
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-        "arrify": "^1.0.0",
-        "chalk": "^2.3.0",
-        "diff": "^3.1.0",
+        "arg": "^4.1.0",
+        "diff": "^4.0.1",
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-        "minimist": "^1.2.0",
-        "mkdirp": "^0.5.1",
-        "source-map-support": "^0.5.3",
-        "yn": "^2.0.0"
+        "source-map-support": "^0.5.6",
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+      "version": "1.10.0",
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-      "integrity": "sha512-UxG2yNxJ5pgGwmMzPMYh/CCnCnh0HfPgtlVRDs1ykZklufFBL1ZoTlWFRz2NQjcoEiDoRp+JyT0lhBbbH/obyA==",
+      "version": "5.18.0",
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@@ -7860,7 +7813,7 @@
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-        "js-yaml": "^3.13.0",
+        "js-yaml": "^3.13.1",
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@@ -7869,10 +7822,10 @@
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-          "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.0.tgz",
-          "integrity": "sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ==",
+        "diff": {
+          "version": "3.5.0",
+          "resolved": "https://registry.npmjs.org/diff/-/diff-3.5.0.tgz",
+          "integrity": "sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==",
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@@ -7929,9 +7882,9 @@
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-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.4.5.tgz",
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+      "version": "3.5.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
+      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
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@@ -8147,7 +8100,8 @@
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-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
+      "dev": true
     },
     "util.promisify": {
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@@ -8180,9 +8134,9 @@
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-      "resolved": "https://registry.npmjs.org/validator/-/validator-8.2.0.tgz",
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+      "version": "11.0.0",
+      "resolved": "https://registry.npmjs.org/validator/-/validator-11.0.0.tgz",
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@@ -8453,9 +8407,9 @@
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-      "resolved": "https://registry.npmjs.org/yn/-/yn-2.0.0.tgz",
-      "integrity": "sha1-5a2ryKz0CPY4X8dklWhMiOavaJo=",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.0.tgz",
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diff --git a/package.json b/package.json
index 2f77ce1..97694ee 100644
--- a/package.json
+++ b/package.json
@@ -27,68 +27,68 @@
     "watch-debug": "concurrently -k -p \"[{name}]\" -n \"Sass,TypeScript,Node\" -c \"yellow.bold,cyan.bold,green.bold\" \"npm run watch-sass\" \"npm run watch-ts\" \"npm run serve-debug\""
   },
   "dependencies": {
-    "async": "^2.6.0",
+    "async": "^3.0.1",
     "bcrypt-nodejs": "^0.0.3",
-    "bluebird": "^3.5.1",
-    "body-parser": "^1.18.2",
-    "compression": "^1.7.1",
-    "connect-mongo": "^2.0.0",
-    "dotenv": "^4.0.0",
-    "errorhandler": "^1.5.0",
-    "express": "^4.16.2",
+    "bluebird": "^3.5.5",
+    "body-parser": "^1.19.0",
+    "compression": "^1.7.4",
+    "connect-mongo": "^3.0.0",
+    "dotenv": "^8.0.0",
+    "errorhandler": "^1.5.1",
+    "express": "^4.17.1",
     "express-flash": "0.0.2",
-    "express-session": "^1.15.6",
-    "express-validator": "^4.3.0",
-    "fbgraph": "^1.4.1",
-    "lodash": "^4.17.5",
-    "lusca": "^1.5.2",
-    "mongoose": "^5.4.2",
-    "nodemailer": "^4.4.1",
+    "express-session": "^1.16.2",
+    "express-validator": "^6.0.1",
+    "fbgraph": "^1.4.4",
+    "lodash": "^4.17.11",
+    "lusca": "^1.6.1",
+    "mongoose": "^5.6.0",
+    "nodemailer": "^6.2.1",
     "passport": "^0.4.0",
-    "passport-facebook": "^2.1.1",
+    "passport-facebook": "^3.0.0",
     "passport-local": "^1.0.0",
-    "pug": "^2.0.3",
+    "pug": "^2.0.4",
     "request": "^2.88.0",
-    "request-promise": "^4.2.2",
-    "winston": "^2.4.0"
+    "request-promise": "^4.2.4",
+    "winston": "^2.4.2"
   },
   "devDependencies": {
-    "@types/async": "^2.0.45",
+    "@types/async": "^3.0.0",
     "@types/bcrypt-nodejs": "^0.0.30",
-    "@types/bluebird": "^3.5.20",
-    "@types/body-parser": "^1.16.8",
-    "@types/compression": "^0.0.35",
-    "@types/connect-mongo": "^0.0.35",
-    "@types/dotenv": "^4.0.2",
+    "@types/bluebird": "^3.5.27",
+    "@types/body-parser": "^1.17.0",
+    "@types/compression": "^0.0.36",
+    "@types/connect-mongo": "^0.0.42",
+    "@types/dotenv": "^6.1.1",
     "@types/errorhandler": "^0.0.32",
-    "@types/express": "^4.11.1",
-    "@types/express-session": "^1.15.8",
-    "@types/jest": "^22.1.3",
+    "@types/express": "^4.17.0",
+    "@types/express-session": "^1.15.13",
+    "@types/jest": "^24.0.15",
     "@types/jquery": "^3.3.29",
-    "@types/lodash": "^4.14.91",
-    "@types/lusca": "^1.5.0",
-    "@types/mongodb": "^3.0.5",
-    "@types/mongoose": "^4.7.34",
+    "@types/lodash": "^4.14.134",
+    "@types/lusca": "^1.6.0",
+    "@types/mongodb": "^3.1.28",
+    "@types/mongoose": "^5.5.6",
     "@types/morgan": "^1.7.35",
-    "@types/node": "^9.4.6",
-    "@types/nodemailer": "^4.3.4",
-    "@types/passport": "^0.4.3",
-    "@types/passport-facebook": "^2.1.7",
-    "@types/passport-local": "^1.0.32",
-    "@types/request": "^2.47.0",
-    "@types/shelljs": "^0.7.8",
-    "@types/supertest": "^2.0.4",
-    "@types/winston": "^2.3.7",
-    "chai": "^4.1.2",
-    "concurrently": "^3.5.1",
-    "jest": "^24.0.0",
+    "@types/node": "^12.0.10",
+    "@types/nodemailer": "^6.2.0",
+    "@types/passport": "^1.0.0",
+    "@types/passport-facebook": "^2.1.9",
+    "@types/passport-local": "^1.0.33",
+    "@types/request": "^2.48.1",
+    "@types/shelljs": "^0.8.5",
+    "@types/supertest": "^2.0.7",
+    "@types/winston": "^2.3.9",
+    "chai": "^4.2.0",
+    "concurrently": "^4.1.0",
+    "jest": "^24.8.0",
     "node-sass": "^4.12.0",
-    "nodemon": "^1.18.10",
-    "shelljs": "^0.8.1",
-    "supertest": "^3.0.0",
-    "ts-jest": "^24.0.0",
-    "ts-node": "^5.0.0",
-    "tslint": "^5.9.1",
-    "typescript": "^3.4.5"
+    "nodemon": "^1.19.1",
+    "shelljs": "^0.8.3",
+    "supertest": "^4.0.2",
+    "ts-jest": "^24.0.2",
+    "ts-node": "^8.3.0",
+    "tslint": "^5.18.0",
+    "typescript": "^3.5.2"
   }
 }
diff --git a/src/app.ts b/src/app.ts
index f644baa..788644b 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -9,7 +9,6 @@ import flash from "express-flash";
 import path from "path";
 import mongoose from "mongoose";
 import passport from "passport";
-import expressValidator from "express-validator";
 import bluebird from "bluebird";
 import { MONGODB_URI, SESSION_SECRET } from "./util/secrets";
 
@@ -35,7 +34,7 @@ const app = express();
 const mongoUrl = MONGODB_URI;
 (<any>mongoose).Promise = bluebird;
 
-mongoose.connect(mongoUrl, { useMongoClient: true }).then(
+mongoose.connect(mongoUrl, { useNewUrlParser: true} ).then(
   () => { /** ready to use. The `mongoose.connect()` promise resolves to undefined. */ },
 ).catch(err => {
   console.log("MongoDB connection error. Please make sure MongoDB is running. " + err);
@@ -49,7 +48,6 @@ app.set("view engine", "pug");
 app.use(compression());
 app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({ extended: true }));
-app.use(expressValidator());
 app.use(session({
   resave: true,
   saveUninitialized: true,
diff --git a/src/controllers/contact.ts b/src/controllers/contact.ts
index 032e508..f14925e 100644
--- a/src/controllers/contact.ts
+++ b/src/controllers/contact.ts
@@ -1,5 +1,6 @@
 import nodemailer from "nodemailer";
 import { Request, Response } from "express";
+import { check, validationResult } from "express-validator";
 
 const transporter = nodemailer.createTransport({
   service: "SendGrid",
@@ -24,14 +25,14 @@ export const getContact = (req: Request, res: Response) => {
  * Send a contact form via Nodemailer.
  */
 export const postContact = (req: Request, res: Response) => {
-  req.assert("name", "Name cannot be blank").notEmpty();
-  req.assert("email", "Email is not valid").isEmail();
-  req.assert("message", "Message cannot be blank").notEmpty();
+  check("name", "Name cannot be blank").not().isEmpty();
+  check("email", "Email is not valid").isEmail();
+  check("message", "Message cannot be blank").not().isEmpty();
 
-  const errors = req.validationErrors();
+  const errors = validationResult(req);
 
-  if (errors) {
-    req.flash("errors", errors);
+  if (!errors.isEmpty()) {
+    req.flash("errors", errors.array());
     return res.redirect("/contact");
   }
 
diff --git a/src/controllers/user.ts b/src/controllers/user.ts
index 7a20aec..4c4865a 100644
--- a/src/controllers/user.ts
+++ b/src/controllers/user.ts
@@ -6,7 +6,7 @@ import { User, UserDocument, AuthToken } from "../models/User";
 import { Request, Response, NextFunction } from "express";
 import { IVerifyOptions } from "passport-local";
 import { WriteError } from "mongodb";
-import request from "express-validator";
+import { check, sanitize, validationResult } from "express-validator";
 import "../config/passport";
 
 /**
@@ -27,21 +27,21 @@ export const getLogin = (req: Request, res: Response) => {
  * Sign in using email and password.
  */
 export const postLogin = (req: Request, res: Response, next: NextFunction) => {
-  req.assert("email", "Email is not valid").isEmail();
-  req.assert("password", "Password cannot be blank").notEmpty();
-  req.sanitize("email").normalizeEmail({ gmail_remove_dots: false });
+  check("email", "Email is not valid").isEmail();
+  check("password", "Password cannot be blank").isLength({min: 1});
+  sanitize("email").normalizeEmail({ gmail_remove_dots: false });
 
-  const errors = req.validationErrors();
+  const errors = validationResult(req);
 
-  if (errors) {
-    req.flash("errors", errors);
+  if (!errors.isEmpty()) {
+    req.flash("errors", errors.array());
     return res.redirect("/login");
   }
 
   passport.authenticate("local", (err: Error, user: UserDocument, info: IVerifyOptions) => {
     if (err) { return next(err); }
     if (!user) {
-      req.flash("errors", info.message);
+      req.flash("errors", {msg: info.message});
       return res.redirect("/login");
     }
     req.logIn(user, (err) => {
@@ -79,15 +79,15 @@ export const getSignup = (req: Request, res: Response) => {
  * Create a new local account.
  */
 export const postSignup = (req: Request, res: Response, next: NextFunction) => {
-  req.assert("email", "Email is not valid").isEmail();
-  req.assert("password", "Password must be at least 4 characters long").len({ min: 4 });
-  req.assert("confirmPassword", "Passwords do not match").equals(req.body.password);
-  req.sanitize("email").normalizeEmail({ gmail_remove_dots: false });
+  check("email", "Email is not valid").isEmail();
+  check("password", "Password must be at least 4 characters long").isLength({ min: 4 });
+  check("confirmPassword", "Passwords do not match").equals(req.body.password);
+  sanitize("email").normalizeEmail({ gmail_remove_dots: false });
 
-  const errors = req.validationErrors();
+  const errors = validationResult(req);
 
-  if (errors) {
-    req.flash("errors", errors);
+  if (!errors.isEmpty()) {
+    req.flash("errors", errors.array());
     return res.redirect("/signup");
   }
 
@@ -129,13 +129,13 @@ export const getAccount = (req: Request, res: Response) => {
  * Update profile information.
  */
 export const postUpdateProfile = (req: Request, res: Response, next: NextFunction) => {
-  req.assert("email", "Please enter a valid email address.").isEmail();
-  req.sanitize("email").normalizeEmail({ gmail_remove_dots: false });
+  check("email", "Please enter a valid email address.").isEmail();
+  sanitize("email").normalizeEmail({ gmail_remove_dots: false });
 
-  const errors = req.validationErrors();
+  const errors = validationResult(req);
 
-  if (errors) {
-    req.flash("errors", errors);
+  if (!errors.isEmpty()) {
+    req.flash("errors", errors.array());
     return res.redirect("/account");
   }
 
@@ -165,13 +165,13 @@ export const postUpdateProfile = (req: Request, res: Response, next: NextFunctio
  * Update current password.
  */
 export const postUpdatePassword = (req: Request, res: Response, next: NextFunction) => {
-  req.assert("password", "Password must be at least 4 characters long").len({ min: 4 });
-  req.assert("confirmPassword", "Passwords do not match").equals(req.body.password);
+  check("password", "Password must be at least 4 characters long").isLength({ min: 4 });
+  check("confirmPassword", "Passwords do not match").equals(req.body.password);
 
-  const errors = req.validationErrors();
+  const errors = validationResult(req);
 
-  if (errors) {
-    req.flash("errors", errors);
+  if (!errors.isEmpty()) {
+    req.flash("errors", errors.array());
     return res.redirect("/account");
   }
 
@@ -245,13 +245,13 @@ export const getReset = (req: Request, res: Response, next: NextFunction) => {
  * Process the reset password request.
  */
 export const postReset = (req: Request, res: Response, next: NextFunction) => {
-  req.assert("password", "Password must be at least 4 characters long.").len({ min: 4 });
-  req.assert("confirm", "Passwords must match.").equals(req.body.password);
+  check("password", "Password must be at least 4 characters long.").isLength({ min: 4 });
+  check("confirm", "Passwords must match.").equals(req.body.password);
 
-  const errors = req.validationErrors();
+  const errors = validationResult(req);
 
-  if (errors) {
-    req.flash("errors", errors);
+  if (!errors.isEmpty()) {
+    req.flash("errors", errors.array());
     return res.redirect("back");
   }
 
@@ -320,13 +320,13 @@ export const getForgot = (req: Request, res: Response) => {
  * Create a random token, then the send user an email with a reset link.
  */
 export const postForgot = (req: Request, res: Response, next: NextFunction) => {
-  req.assert("email", "Please enter a valid email address.").isEmail();
-  req.sanitize("email").normalizeEmail({ gmail_remove_dots: false });
+  check("email", "Please enter a valid email address.").isEmail();
+  sanitize("email").normalizeEmail({ gmail_remove_dots: false });
 
-  const errors = req.validationErrors();
+  const errors = validationResult(req);
 
-  if (errors) {
-    req.flash("errors", errors);
+  if (!errors.isEmpty()) {
+    req.flash("errors", errors.array());
     return res.redirect("/forgot");
   }
 
diff --git a/src/models/User.ts b/src/models/User.ts
index 35bdf4c..fb939d3 100644
--- a/src/models/User.ts
+++ b/src/models/User.ts
@@ -54,7 +54,7 @@ const userSchema = new mongoose.Schema({
  * Password hash middleware.
  */
 userSchema.pre("save", function save(next) {
-  const user = this;
+  const user = this as UserDocument;
   if (!user.isModified("password")) { return next(); }
   bcrypt.genSalt(10, (err, salt) => {
     if (err) { return next(err); }
diff --git a/src/util/logger.ts b/src/util/logger.ts
index dba312a..5082624 100644
--- a/src/util/logger.ts
+++ b/src/util/logger.ts
@@ -1,16 +1,18 @@
-import winston from "winston";
-import { Logger } from "winston";
+import { Logger, LoggerOptions, transports } from "winston";
 
-const logger = new (Logger)({
-    transports: [
-        new (winston.transports.Console)({ level: process.env.NODE_ENV === "production" ? "error" : "debug" }),
-        new (winston.transports.File)({ filename: "debug.log", level: "debug"})
-    ]
-});
+const options: LoggerOptions = {
+  transports: [
+    new transports.Console({
+      level: process.env.NODE_ENV === "production" ? "error" : "debug"
+    }),
+    new transports.File({ filename: "debug.log", level: "debug" })
+  ]
+};
+
+const logger = new Logger(options);
 
 if (process.env.NODE_ENV !== "production") {
-    logger.debug("Logging initialized at debug level");
+  logger.debug("Logging initialized at debug level");
 }
 
 export default logger;
-
diff --git a/tsconfig.json b/tsconfig.json
index c5227a3..0f5d76c 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,6 +2,7 @@
     "compilerOptions": {
         "module": "commonjs",
         "esModuleInterop": true,
+        "allowSyntheticDefaultImports": true,
         "target": "es6",
         "noImplicitAny": true,
         "moduleResolution": "node",