diff --git a/src/api/public/me/me.controller.ts b/src/api/public/me/me.controller.ts
index b445b0968..0ba65b013 100644
--- a/src/api/public/me/me.controller.ts
+++ b/src/api/public/me/me.controller.ts
@@ -27,6 +27,7 @@ import { ApiSecurity, ApiTags } from '@nestjs/swagger';
 import { HistoryEntryDto } from '../../../history/history-entry.dto';
 import { UserInfoDto } from '../../../users/user-info.dto';
 import { NotInDBError } from '../../../errors/errors';
+import { Request } from 'express';
 
 @ApiTags('me')
 @ApiSecurity('token')
@@ -43,7 +44,7 @@ export class MeController {
 
   @UseGuards(TokenAuthGuard)
   @Get()
-  async getMe(@Req() req): Promise<UserInfoDto> {
+  async getMe(@Req() req: Request): Promise<UserInfoDto> {
     return this.usersService.toUserDto(
       await this.usersService.getUserByUsername(req.user.userName),
     );
@@ -51,7 +52,7 @@ export class MeController {
 
   @UseGuards(TokenAuthGuard)
   @Get('history')
-  async getUserHistory(@Req() req): Promise<HistoryEntryDto[]> {
+  async getUserHistory(@Req() req: Request): Promise<HistoryEntryDto[]> {
     const foundEntries = await this.historyService.getEntriesByUser(req.user);
     return await Promise.all(
       foundEntries.map(
@@ -63,7 +64,7 @@ export class MeController {
   @UseGuards(TokenAuthGuard)
   @Put('history/:note')
   async updateHistoryEntry(
-    @Req() req,
+    @Req() req: Request,
     @Param('note') note: string,
     @Body() entryUpdateDto: HistoryEntryUpdateDto,
   ): Promise<HistoryEntryDto> {
@@ -87,7 +88,7 @@ export class MeController {
   @UseGuards(TokenAuthGuard)
   @Delete('history/:note')
   @HttpCode(204)
-  deleteHistoryEntry(@Req() req, @Param('note') note: string) {
+  deleteHistoryEntry(@Req() req: Request, @Param('note') note: string) {
     // ToDo: Check if user is allowed to delete note
     try {
       return this.historyService.deleteHistoryEntry(note, req.user);
@@ -101,7 +102,7 @@ export class MeController {
 
   @UseGuards(TokenAuthGuard)
   @Get('notes')
-  async getMyNotes(@Req() req): Promise<NoteMetadataDto[]> {
+  async getMyNotes(@Req() req: Request): Promise<NoteMetadataDto[]> {
     const notes = this.notesService.getUserNotes(req.user);
     return await Promise.all(
       notes.map((note) => this.notesService.toNoteMetadataDto(note)),
diff --git a/src/api/public/media/media.controller.ts b/src/api/public/media/media.controller.ts
index 730f5c35a..28fff33c3 100644
--- a/src/api/public/media/media.controller.ts
+++ b/src/api/public/media/media.controller.ts
@@ -20,6 +20,7 @@ import {
   UseInterceptors,
 } from '@nestjs/common';
 import { FileInterceptor } from '@nestjs/platform-express';
+import { Request } from 'express';
 import {
   ClientError,
   MediaBackendError,
@@ -48,7 +49,7 @@ export class MediaController {
   @Post()
   @UseInterceptors(FileInterceptor('file'))
   async uploadMedia(
-    @Req() req,
+    @Req() req: Request,
     @UploadedFile() file: MulterFile,
     @Headers('HedgeDoc-Note') noteId: string,
   ): Promise<MediaUploadUrlDto> {
@@ -80,7 +81,7 @@ export class MediaController {
   @UseGuards(TokenAuthGuard)
   @Delete(':filename')
   async deleteMedia(
-    @Req() req,
+    @Req() req: Request,
     @Param('filename') filename: string,
   ): Promise<void> {
     const username = req.user.userName;
diff --git a/src/api/public/notes/notes.controller.ts b/src/api/public/notes/notes.controller.ts
index dc110a288..1caa35d35 100644
--- a/src/api/public/notes/notes.controller.ts
+++ b/src/api/public/notes/notes.controller.ts
@@ -41,6 +41,7 @@ import { RevisionMetadataDto } from '../../../revisions/revision-metadata.dto';
 import { RevisionDto } from '../../../revisions/revision.dto';
 import { PermissionsService } from '../../../permissions/permissions.service';
 import { Note } from '../../../notes/note.entity';
+import { Request } from 'express';
 
 @ApiTags('notes')
 @ApiSecurity('token')
@@ -59,7 +60,7 @@ export class NotesController {
   @UseGuards(TokenAuthGuard)
   @Post()
   async createNote(
-    @Req() req,
+    @Req() req: Request,
     @MarkdownBody() text: string,
   ): Promise<NoteDto> {
     // ToDo: provide user for createNoteDto
@@ -75,7 +76,7 @@ export class NotesController {
   @UseGuards(TokenAuthGuard)
   @Get(':noteIdOrAlias')
   async getNote(
-    @Req() req,
+    @Req() req: Request,
     @Param('noteIdOrAlias') noteIdOrAlias: string,
   ): Promise<NoteDto> {
     let note: Note;
@@ -97,7 +98,7 @@ export class NotesController {
   @UseGuards(TokenAuthGuard)
   @Post(':noteAlias')
   async createNamedNote(
-    @Req() req,
+    @Req() req: Request,
     @Param('noteAlias') noteAlias: string,
     @MarkdownBody() text: string,
   ): Promise<NoteDto> {
@@ -120,7 +121,7 @@ export class NotesController {
   @UseGuards(TokenAuthGuard)
   @Delete(':noteIdOrAlias')
   async deleteNote(
-    @Req() req,
+    @Req() req: Request,
     @Param('noteIdOrAlias') noteIdOrAlias: string,
   ): Promise<void> {
     try {
@@ -143,7 +144,7 @@ export class NotesController {
   @UseGuards(TokenAuthGuard)
   @Put(':noteIdOrAlias')
   async updateNote(
-    @Req() req,
+    @Req() req: Request,
     @Param('noteIdOrAlias') noteIdOrAlias: string,
     @MarkdownBody() text: string,
   ): Promise<NoteDto> {
@@ -168,7 +169,7 @@ export class NotesController {
   @Get(':noteIdOrAlias/content')
   @Header('content-type', 'text/markdown')
   async getNoteContent(
-    @Req() req,
+    @Req() req: Request,
     @Param('noteIdOrAlias') noteIdOrAlias: string,
   ): Promise<string> {
     try {
@@ -188,7 +189,7 @@ export class NotesController {
   @UseGuards(TokenAuthGuard)
   @Get(':noteIdOrAlias/metadata')
   async getNoteMetadata(
-    @Req() req,
+    @Req() req: Request,
     @Param('noteIdOrAlias') noteIdOrAlias: string,
   ): Promise<NoteMetadataDto> {
     try {
@@ -211,7 +212,7 @@ export class NotesController {
   @UseGuards(TokenAuthGuard)
   @Put(':noteIdOrAlias/metadata/permissions')
   async updateNotePermissions(
-    @Req() req,
+    @Req() req: Request,
     @Param('noteIdOrAlias') noteIdOrAlias: string,
     @Body() updateDto: NotePermissionsUpdateDto,
   ): Promise<NotePermissionsDto> {
@@ -234,7 +235,7 @@ export class NotesController {
   @UseGuards(TokenAuthGuard)
   @Get(':noteIdOrAlias/revisions')
   async getNoteRevisions(
-    @Req() req,
+    @Req() req: Request,
     @Param('noteIdOrAlias') noteIdOrAlias: string,
   ): Promise<RevisionMetadataDto[]> {
     try {
@@ -259,7 +260,7 @@ export class NotesController {
   @UseGuards(TokenAuthGuard)
   @Get(':noteIdOrAlias/revisions/:revisionId')
   async getNoteRevision(
-    @Req() req,
+    @Req() req: Request,
     @Param('noteIdOrAlias') noteIdOrAlias: string,
     @Param('revisionId') revisionId: number,
   ): Promise<RevisionDto> {
diff --git a/src/auth/mock-auth.guard.ts b/src/auth/mock-auth.guard.ts
index 5f1e40c6b..fc6d166ef 100644
--- a/src/auth/mock-auth.guard.ts
+++ b/src/auth/mock-auth.guard.ts
@@ -7,6 +7,7 @@
 import { ExecutionContext, Injectable } from '@nestjs/common';
 import { UsersService } from '../users/users.service';
 import { User } from '../users/user.entity';
+import { Request } from 'express';
 
 @Injectable()
 export class MockAuthGuard {
@@ -14,7 +15,7 @@ export class MockAuthGuard {
   constructor(private usersService: UsersService) {}
 
   async canActivate(context: ExecutionContext) {
-    const req = context.switchToHttp().getRequest();
+    const req: Request = context.switchToHttp().getRequest();
     if (!this.user) {
       // this assures that we can create the user 'hardcoded', if we need them before any calls are made or
       // create them on the fly when the first call to the api is made