diff --git a/package.json b/package.json
index fe7c918..3fb2fba 100644
--- a/package.json
+++ b/package.json
@@ -61,8 +61,8 @@
   "scripts": {
     "prepare": "husky install",
     "start": "next start",
-    "dev": "DB_ENV=development yarn build-cached-data && DB_ENV=development REACT_APP_IMPRESS_LOG_IN_AS=$IMPRESS_LOG_IN_AS TS_NODE_COMPILER=typescript-cached-transpile next dev",
-    "local-prod": "DB_ENV=production yarn build-cached-data && DB_ENV=production REACT_APP_IMPRESS_LOG_IN_AS=$IMPRESS_LOG_IN_AS TS_NODE_COMPILER=typescript-cached-transpile next dev",
+    "dev": "DB_ENV=development yarn build-cached-data && DB_ENV=development TS_NODE_COMPILER=typescript-cached-transpile next dev",
+    "local-prod": "DB_ENV=production yarn build-cached-data && DB_ENV=production TS_NODE_COMPILER=typescript-cached-transpile next dev",
     "build": "yarn build-cached-data && next build",
     "vercel-build": "yum install libuuid-devel libmount-devel && cp /lib64/{libuuid,libmount,libblkid}.so.1 node_modules/canvas/build/Release/",
     "test": "jest test --env=jsdom",
diff --git a/src/app/components/useCurrentUser.js b/src/app/components/useCurrentUser.js
index 359eae9..a473700 100644
--- a/src/app/components/useCurrentUser.js
+++ b/src/app/components/useCurrentUser.js
@@ -18,27 +18,6 @@ function useCurrentUser() {
     isEnabled: authMode === "db",
   });
 
-  // In development, you can start the server with
-  // `IMPRESS_LOG_IN_AS=12345 vc dev` to simulate logging in as user 12345.
-  //
-  // This flag shouldn't be present in prod anyway, but the dev check is an
-  // extra safety precaution!
-  //
-  // NOTE: In package.json, we forward the flag to REACT_APP_IMPRESS_LOG_IN_AS,
-  //       because create-react-app only forwards flags with that prefix.
-  if (
-    process.env["NODE_ENV"] === "development" &&
-    process.env["REACT_APP_IMPRESS_LOG_IN_AS"]
-  ) {
-    const id = process.env["REACT_APP_IMPRESS_LOG_IN_AS"];
-    return {
-      isLoading: false,
-      isLoggedIn: true,
-      id,
-      username: `<Simulated User ${id}>`,
-    };
-  }
-
   if (authMode === "auth0") {
     return currentUserViaAuth0;
   } else if (authMode === "db") {
diff --git a/src/server/auth.js b/src/server/auth.js
index eadf361..d4e5927 100644
--- a/src/server/auth.js
+++ b/src/server/auth.js
@@ -17,18 +17,6 @@ async function getJwtKey(header, callback) {
 }
 
 async function getUserIdFromToken(token) {
-  // In development, you can start the server with
-  // `IMPRESS_LOG_IN_AS=12345 vc dev` to simulate logging in as user 12345.
-  //
-  // This flag shouldn't be present in prod anyway, but the dev check is an
-  // extra safety precaution!
-  if (
-    process.env["NODE_ENV"] === "development" &&
-    process.env["IMPRESS_LOG_IN_AS"]
-  ) {
-    return process.env["IMPRESS_LOG_IN_AS"];
-  }
-
   if (!token) {
     return null;
   }