diff --git a/types/express/index.d.ts b/types/express/index.d.ts
new file mode 100644
index 000000000..13bbf4862
--- /dev/null
+++ b/types/express/index.d.ts
@@ -0,0 +1,13 @@
+/*
+ * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { User} from '../../src/users/user.entity';
+
+declare module 'express' {
+  export interface Request {
+    user?: User;
+  }
+}