diff --git a/packages/backend/src/apps/dropbox/auth/refresh-token.ts b/packages/backend/src/apps/dropbox/auth/refresh-token.ts
index 5cd2e226..67c4454f 100644
--- a/packages/backend/src/apps/dropbox/auth/refresh-token.ts
+++ b/packages/backend/src/apps/dropbox/auth/refresh-token.ts
@@ -18,6 +18,9 @@ const refreshToken = async ($: IGlobalVariable) => {
       params,
       headers: {
         Authorization: `Basic ${basicAuthToken}`
+      },
+      additionalProperties: {
+        skipAddingAuthHeader: true
       }
     }
   );
diff --git a/packages/backend/src/apps/dropbox/common/add-auth-header.ts b/packages/backend/src/apps/dropbox/common/add-auth-header.ts
index 984d0b3a..ac7b7231 100644
--- a/packages/backend/src/apps/dropbox/common/add-auth-header.ts
+++ b/packages/backend/src/apps/dropbox/common/add-auth-header.ts
@@ -3,7 +3,7 @@ import { TBeforeRequest } from '@automatisch/types';
 const addAuthHeader: TBeforeRequest = ($, requestConfig) => {
   requestConfig.headers['Content-Type'] = 'application/json';
 
-  if (!requestConfig.headers.Authorization && $.auth.data?.accessToken) {
+  if (!requestConfig.additionalProperties?.skipAddingAuthHeader && $.auth.data?.accessToken) {
     requestConfig.headers.Authorization = `Bearer ${$.auth.data.accessToken}`;
   }