diff --git a/package.json b/package.json
index 45e1aaf322de1087cd69a292cd2a65ec55b957b5..27172919f2707b05e8f250a832fc416c8e26c7ae 100644
--- a/package.json
+++ b/package.json
@@ -51,6 +51,7 @@
     "p-queue": "^6.4.0",
     "pg-promise": "^10.5.6",
     "prom-client": "^12.0.0",
+    "uuid": "^8.3.1",
     "winston": "^3.2.1",
     "winston-daily-rotate-file": "^4.5.0"
   },
@@ -58,14 +59,15 @@
     "@istanbuljs/nyc-config-typescript": "^1.0.1",
     "@typescript-eslint/eslint-plugin": "^2.14.0",
     "@typescript-eslint/parser": "^2.14.0",
+    "@types/better-sqlite3": "^5.4.1",
     "@types/chai": "^4.2.11",
     "@types/command-line-args": "^5.0.0",
+    "@types/express": "^4.17.9",
     "@types/js-yaml": "^3.12.4",
     "@types/marked": "^1.1.0",
     "@types/mime": "^2.0.2",
     "@types/mocha": "^7.0.2",
     "@types/node": "^12",
-    "@types/better-sqlite3": "^5.4.1",
     "chai": "^4.2.0",
     "mocha": "^8.0.1",
     "nyc": "^15.1.0",
diff --git a/src/db/roomstore.ts b/src/db/roomstore.ts
index dc442162d1b34008d049ecb027b92b18b28913ce..4b526c7c392a7eef5e0d0f43a7903faf52f16060 100644
--- a/src/db/roomstore.ts
+++ b/src/db/roomstore.ts
@@ -17,7 +17,7 @@ import { Log } from "../log";
 import { IDatabaseConnector } from "./connector";
 import { Util } from "../util";
 
-import * as uuid from "uuid/v4";
+import { v4 as uuid } from "uuid";
 import { MetricPeg } from "../metrics";
 import { TimedCache } from "../structures/timedcache";
 
diff --git a/src/discordas.ts b/src/discordas.ts
index 621ddcefb15efdaaec38ca31cad8834df25a70f8..930e20349bc729bc424c4a14fe6cdf58bfaa176e 100644
--- a/src/discordas.ts
+++ b/src/discordas.ts
@@ -23,9 +23,10 @@ import { Log } from "./log";
 import "source-map-support/register";
 import * as cliArgs from "command-line-args";
 import * as usage from "command-line-usage";
-import * as uuid from "uuid/v4";
+import { v4 as uuid } from "uuid";
 import { IMatrixEvent } from "./matrixtypes";
 import { MetricPeg, PrometheusBridgeMetrics } from "./metrics";
+import { Response } from "express";
 
 const log = new Log("DiscordAS");
 
@@ -178,6 +179,15 @@ async function run(): Promise<void> {
     const roomhandler = discordbot.RoomHandler;
     const eventProcessor = discordbot.MxEventProcessor;
 
+    // 2020-12-07: If this fails to build in TypeScript with
+    // "Namespace 'serveStatic' has no exported member 'RequestHandlerConstructor'.",
+    // remove @types/express-serve-static-core and @types/serve-static from yarn.lock
+    // and run yarn.
+    // See https://github.com/DefinitelyTyped/DefinitelyTyped/issues/49595
+    appservice.expressAppInstance.get("/health", (_, res: Response) => {
+        res.status(200).send("");
+    });
+    
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
     appservice.on("query.room", async (roomAlias: string, createRoom: (opts: any) => Promise<void>) => {
         try {
diff --git a/yarn.lock b/yarn.lock
index 6930d9c56339623dae1a184a51cd964535a87158..d2cb11abd4fdb0e9a775917685a885e5ef7e9c79 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -299,9 +299,9 @@
   integrity sha512-OCutwjDZ4aFS6PB1UZ988C4YgwlBHJd6wCeQqaLdmadZ/7e+w79+hbMUFC1QXDNCmdyoRfAFdm0RypzwR+Qpag==
 
 "@types/express-serve-static-core@*":
-  version "4.17.13"
-  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.17.13.tgz#d9af025e925fc8b089be37423b8d1eac781be084"
-  integrity sha512-RgDi5a4nuzam073lRGKTUIaL3eF2+H7LJvJ8eUnCI0wA6SNjXc44DCmWNiTLs/AZ7QlsFWZiw/gTG3nSQGL0fA==
+  version "4.17.14"
+  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.17.14.tgz#cabf91debeeb3cb04b798e2cff908864e89b6106"
+  integrity sha512-uFTLwu94TfUFMToXNgRZikwPuZdOtDgs3syBtAIr/OXorL1kJqUJT9qCLnRZ5KBOWfZQikQ2xKgR2tnDj1OgDA==
   dependencies:
     "@types/node" "*"
     "@types/qs" "*"
@@ -317,6 +317,16 @@
     "@types/qs" "*"
     "@types/serve-static" "*"
 
+"@types/express@^4.17.9":
+  version "4.17.9"
+  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.9.tgz#f5f2df6add703ff28428add52bdec8a1091b0a78"
+  integrity sha512-SDzEIZInC4sivGIFY4Sz1GG6J9UObPwCInYJjko2jzOf/Imx/dlpume6Xxwj1ORL82tBbmN4cPDIDkLbWHk9hw==
+  dependencies:
+    "@types/body-parser" "*"
+    "@types/express-serve-static-core" "*"
+    "@types/qs" "*"
+    "@types/serve-static" "*"
+
 "@types/http-cache-semantics@*":
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/@types/http-cache-semantics/-/http-cache-semantics-4.0.0.tgz#9140779736aa2655635ee756e2467d787cfe8a2a"
@@ -400,9 +410,9 @@
     "@types/node" "*"
 
 "@types/serve-static@*":
-  version "1.13.6"
-  resolved "https://registry.yarnpkg.com/@types/serve-static/-/serve-static-1.13.6.tgz#866b1b8dec41c36e28c7be40ac725b88be43c5c1"
-  integrity sha512-nuRJmv7jW7VmCVTn+IgYDkkbbDGyIINOeu/G0d74X3lm6E5KfMeQPJhxIt1ayQeQB3cSxvYs1RA/wipYoFB4EA==
+  version "1.13.8"
+  resolved "https://registry.yarnpkg.com/@types/serve-static/-/serve-static-1.13.8.tgz#851129d434433c7082148574ffec263d58309c46"
+  integrity sha512-MoJhSQreaVoL+/hurAZzIm8wafFR6ajiTM1m4A0kv6AGeVBl4r4pOV8bGFrjjq1sGxDTnCoF8i22o0/aE5XCyA==
   dependencies:
     "@types/mime" "*"
     "@types/node" "*"
@@ -3856,6 +3866,11 @@ v8-compile-cache@^2.0.3:
   resolved "https://registry.yarnpkg.com/v8-compile-cache/-/v8-compile-cache-2.2.0.tgz#9471efa3ef9128d2f7c6a7ca39c4dd6b5055b132"
   integrity sha512-gTpR5XQNKFwOd4clxfnhaqvfqMpqEwr4tOtCyz4MtYZX2JYhfr1JvBFKdS+7K/9rfpZR3VLX+YWBbKoxCgS43Q==
 
+uuid@^8.3.1:
+  version "8.3.1"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.1.tgz#2ba2e6ca000da60fce5a196954ab241131e05a31"
+  integrity sha512-FOmRr+FmWEIG8uhZv6C2bTgEVXsHk08kE7mPlrBbEe+c3r9pjceVPgupIfNIhc4yx55H69OXANrUaSuu9eInKg==
+
 vary@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"