diff --git a/src/lib/web/auth/dropbox/index.ts b/src/lib/web/auth/dropbox/index.ts
index bf8db04a6..a6f4d750e 100644
--- a/src/lib/web/auth/dropbox/index.ts
+++ b/src/lib/web/auth/dropbox/index.ts
@@ -18,7 +18,7 @@ export const DropboxMiddleware: AuthMiddleware = {
     }, (
       accessToken: string,
       refreshToken: string,
-      profile: any,
+      profile,
       done: (err?: Error | null, user?: User) => void
     ): void => {
       // the Dropbox plugin wraps the email addresses in an object
diff --git a/src/lib/web/auth/google/index.ts b/src/lib/web/auth/google/index.ts
index 54c2753ed..165d1f7e5 100644
--- a/src/lib/web/auth/google/index.ts
+++ b/src/lib/web/auth/google/index.ts
@@ -17,7 +17,7 @@ export const GoogleMiddleware: AuthMiddleware = {
     }, (
       accessToken: string,
       refreshToken: string,
-      profile: any,
+      profile,
       done) => {
       /*
        This ugly hack is neccessary, because the Google Strategy wants a done-callback with an err as Error | null | undefined
diff --git a/src/lib/web/auth/oauth2/oauth2-custom-strategy.ts b/src/lib/web/auth/oauth2/oauth2-custom-strategy.ts
index 4fec1cbc8..a6b80fcc3 100644
--- a/src/lib/web/auth/oauth2/oauth2-custom-strategy.ts
+++ b/src/lib/web/auth/oauth2/oauth2-custom-strategy.ts
@@ -2,7 +2,7 @@ import { InternalOAuthError, Strategy as OAuth2Strategy } from 'passport-oauth2'
 import { config } from '../../../config'
 import { Profile, ProviderEnum } from '../../../models/user'
 
-function extractProfileAttribute (data, path: string): any {
+function extractProfileAttribute (data, path: string): string {
   // can handle stuff like `attrs[0].name`
   const pathArray = path.split('.')
   for (const segment of pathArray) {
diff --git a/src/lib/web/auth/utils.ts b/src/lib/web/auth/utils.ts
index bf0de1fc6..025b21478 100644
--- a/src/lib/web/auth/utils.ts
+++ b/src/lib/web/auth/utils.ts
@@ -1,10 +1,11 @@
+import { Profile } from 'passport'
 import { User } from '../../models'
 import { logger } from '../../logger'
 
 export function passportGeneralCallback (
   accessToken: string,
   refreshToken: string,
-  profile: any,
+  profile: Profile,
   done: (err?: Error | null, user?: User) => void
 ): void {
   const stringifiedProfile = JSON.stringify(profile)