diff --git a/api/transient_data_test.go b/api/transient_data_test.go
index bbb5920..0e34eae 100644
--- a/api/transient_data_test.go
+++ b/api/transient_data_test.go
@@ -1,3 +1,5 @@
+//go:build go1.25
+
 /**
  * Standalone signaling server for the Nextcloud Spreed app.
  * Copyright (C) 2021 struktur AG
diff --git a/async/notifier_test.go b/async/notifier_test.go
index 9bd61eb..b8d1b99 100644
--- a/async/notifier_test.go
+++ b/async/notifier_test.go
@@ -1,3 +1,5 @@
+//go:build go1.25
+
 /**
  * Standalone signaling server for the Nextcloud Spreed app.
  * Copyright (C) 2021 struktur AG
diff --git a/async/single_notifier_test.go b/async/single_notifier_test.go
index 1f2c7dd..9748451 100644
--- a/async/single_notifier_test.go
+++ b/async/single_notifier_test.go
@@ -1,3 +1,5 @@
+//go:build go1.25
+
 /**
  * Standalone signaling server for the Nextcloud Spreed app.
  * Copyright (C) 2022 struktur AG