diff --git a/Telegram/Resources/uwp/AppX/AppxManifest.xml b/Telegram/Resources/uwp/AppX/AppxManifest.xml
index 014d0f14d3..684080c194 100644
--- a/Telegram/Resources/uwp/AppX/AppxManifest.xml
+++ b/Telegram/Resources/uwp/AppX/AppxManifest.xml
@@ -9,7 +9,7 @@
   <Identity Name="TelegramMessengerLLP.TelegramDesktop"
     ProcessorArchitecture="ARCHITECTURE"
     Publisher="CN=536BC709-8EE1-4478-AF22-F0F0F26FF64A"
-    Version="3.0.2.0" />
+    Version="3.0.3.0" />
   <Properties>
     <DisplayName>Telegram Desktop</DisplayName>
     <PublisherDisplayName>Telegram Messenger LLP</PublisherDisplayName>
diff --git a/Telegram/Resources/winrc/Telegram.rc b/Telegram/Resources/winrc/Telegram.rc
index 04086e4df2..d8bcd827cd 100644
--- a/Telegram/Resources/winrc/Telegram.rc
+++ b/Telegram/Resources/winrc/Telegram.rc
@@ -44,8 +44,8 @@ IDI_ICON1               ICON                    "..\\art\\icon256.ico"
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 3,0,2,0
- PRODUCTVERSION 3,0,2,0
+ FILEVERSION 3,0,3,0
+ PRODUCTVERSION 3,0,3,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -62,10 +62,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop"
-            VALUE "FileVersion", "3.0.2.0"
+            VALUE "FileVersion", "3.0.3.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2021"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "3.0.2.0"
+            VALUE "ProductVersion", "3.0.3.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/Resources/winrc/Updater.rc b/Telegram/Resources/winrc/Updater.rc
index 60b9d8e839..cf830551f9 100644
--- a/Telegram/Resources/winrc/Updater.rc
+++ b/Telegram/Resources/winrc/Updater.rc
@@ -35,8 +35,8 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 3,0,2,0
- PRODUCTVERSION 3,0,2,0
+ FILEVERSION 3,0,3,0
+ PRODUCTVERSION 3,0,3,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -53,10 +53,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop Updater"
-            VALUE "FileVersion", "3.0.2.0"
+            VALUE "FileVersion", "3.0.3.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2021"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "3.0.2.0"
+            VALUE "ProductVersion", "3.0.3.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/SourceFiles/core/version.h b/Telegram/SourceFiles/core/version.h
index aeceb6dcf5..b738c24700 100644
--- a/Telegram/SourceFiles/core/version.h
+++ b/Telegram/SourceFiles/core/version.h
@@ -22,7 +22,7 @@ constexpr auto AppId = "{53F49750-6209-4FBF-9CA8-7A333C87D1ED}"_cs;
 constexpr auto AppNameOld = "Telegram Win (Unofficial)"_cs;
 constexpr auto AppName = "Telegram Desktop"_cs;
 constexpr auto AppFile = "Telegram"_cs;
-constexpr auto AppVersion = 3000002;
-constexpr auto AppVersionStr = "3.0.2";
+constexpr auto AppVersion = 3000003;
+constexpr auto AppVersionStr = "3.0.3";
 constexpr auto AppBetaVersion = true;
 constexpr auto AppAlphaVersion = TDESKTOP_ALPHA_VERSION;
diff --git a/Telegram/build/docker/build.sh b/Telegram/build/docker/build.sh
index b1eb2fb549..3c8e19e6a8 100755
--- a/Telegram/build/docker/build.sh
+++ b/Telegram/build/docker/build.sh
@@ -16,7 +16,7 @@ if [ ! -d "$FullScriptPath/../../../../DesktopPrivate" ]; then
 fi
 
 Run () {
-  scl enable devtoolset-9 -- "$@"
+  scl enable llvm-toolset-7.0 -- scl enable devtoolset-9 -- "$@"
 }
 
 HomePath="$FullScriptPath/../.."
diff --git a/Telegram/build/docker/centos_env/run.sh b/Telegram/build/docker/centos_env/run.sh
index 22d050bb93..4d1451f7a8 100755
--- a/Telegram/build/docker/centos_env/run.sh
+++ b/Telegram/build/docker/centos_env/run.sh
@@ -15,7 +15,7 @@ fi
 
 Command="$1"
 if [ "$Command" == "" ]; then
-  Command="scl enable devtoolset-9 -- bash"
+  Command="scl enable llvm-toolset-7.0 -- scl enable devtoolset-9 -- bash"
 fi
 
 docker run -it --rm --cpus=8 --memory=22g -v $HOME/Telegram/DesktopPrivate:/usr/src/DesktopPrivate -v $HOME/Telegram/tdesktop:/usr/src/tdesktop tdesktop:centos_env $Command
diff --git a/Telegram/build/version b/Telegram/build/version
index 58fa7e2a23..f1744f3f35 100644
--- a/Telegram/build/version
+++ b/Telegram/build/version
@@ -1,7 +1,7 @@
-AppVersion         3000002
+AppVersion         3000003
 AppVersionStrMajor 3.0
-AppVersionStrSmall 3.0.2
-AppVersionStr      3.0.2
+AppVersionStrSmall 3.0.3
+AppVersionStr      3.0.3
 BetaChannel        1
 AlphaVersion       0
-AppVersionOriginal 3.0.2.beta
+AppVersionOriginal 3.0.3.beta
diff --git a/changelog.txt b/changelog.txt
index 32d21208bd..d3db605e67 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,7 @@
+3.0.3 beta (12.09.21)
+
+- Try fixing crashes in allocator on Linux.
+
 3.0.2 beta (10.09.21)
 
 - Check who've seen your message in small groups from the context menu.