diff --git a/Telegram/PrepareWin.bat b/Telegram/PrepareWin.bat
index 4092056fc..793a4a948 100644
--- a/Telegram/PrepareWin.bat
+++ b/Telegram/PrepareWin.bat
@@ -5,7 +5,7 @@ set "AppVersion=8042"
 set "AppVersionStrSmall=0.8.42"
 set "AppVersionStr=0.8.42"
 set "AppVersionStrFull=0.8.42.0"
-set "DevChannel=0"
+set "DevChannel=1"
 
 if %DevChannel% neq 0 goto preparedev
 
diff --git a/Telegram/SourceFiles/config.h b/Telegram/SourceFiles/config.h
index b69209a9e..5215beaf0 100644
--- a/Telegram/SourceFiles/config.h
+++ b/Telegram/SourceFiles/config.h
@@ -19,7 +19,7 @@ Copyright (c) 2014 John Preston, https://desktop.telegram.org
 
 static const int32 AppVersion = 8042;
 static const wchar_t *AppVersionStr = L"0.8.42";
-static const bool DevVersion = false;
+static const bool DevVersion = true;
 
 static const wchar_t *AppNameOld = L"Telegram Win (Unofficial)";
 static const wchar_t *AppName = L"Telegram Desktop";
diff --git a/Telegram/Version.sh b/Telegram/Version.sh
index fb9c24bfc..35b2893ac 100755
--- a/Telegram/Version.sh
+++ b/Telegram/Version.sh
@@ -1,2 +1,2 @@
-echo 0.8 8042 0.8.42 0
+echo 0.8 8042 0.8.42 1
 # AppVersionStrMajor AppVersion AppVersionStr DevChannel