diff --git a/README.md b/README.md
index 91fa088..b064af6 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ The technical documents are intended for a technical audience and represent the
 - [Corona-Warn-App Verification Portal Server Software Design](https://github.com/corona-warn-app/cwa-verification-portal/blob/master/docs/architecture-overview.md)
 - [Corona-Warn-App Test Result Server Software Design](https://github.com/corona-warn-app/cwa-testresult-server/blob/master/docs/architecture-overview.md)
 - [Corona-Warn-App Mobile Client (Android) Architecture](https://github.com/corona-warn-app/cwa-app-android/blob/master/docs/architecture-overview.md)
-- [Corona-Warn-App Mobile Client (iOS) Architecture](https://github.com/corona-warn-app/cwa-app-ios/blob/develop/docs/architecture-overview.md)
+- [Corona-Warn-App Mobile Client (iOS) Architecture](https://github.com/corona-warn-app/cwa-app-ios/blob/main/docs/architecture-overview.md)
 - [Criteria for the Evaluation of Contact Tracing Apps](pruefsteine.md)
 - [Corona-Warn-App Security Overview](overview-security.md)
 - [Corona-Warn-App Backend Infrastructure Architecture Overview](https://github.com/corona-warn-app/cwa-documentation/blob/master/backend-infrastructure-architecture.pdf)