diff --git a/Telegram/build/prepare/prepare.py b/Telegram/build/prepare/prepare.py
index 7a151a14b..22de44d92 100644
--- a/Telegram/build/prepare/prepare.py
+++ b/Telegram/build/prepare/prepare.py
@@ -684,6 +684,7 @@ depends:yasm/yasm
 """)
 
 stage('openal-soft', """
+version: 2
     git clone -b wasapi_exact_device_time https://github.com/telegramdesktop/openal-soft.git
     cd openal-soft
     cd build