diff --git a/Telegram/Resources/uwp/AppX/AppxManifest.xml b/Telegram/Resources/uwp/AppX/AppxManifest.xml
index f77644fcd..553d98bef 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="3.1.4.0" />
+    Version="3.1.5.0" />
   <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 fc2794ada..a16fb2d26 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 3,1,4,0
- PRODUCTVERSION 3,1,4,0
+ FILEVERSION 3,1,5,0
+ PRODUCTVERSION 3,1,5,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -62,10 +62,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop"
-            VALUE "FileVersion", "3.1.4.0"
+            VALUE "FileVersion", "3.1.5.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2021"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "3.1.4.0"
+            VALUE "ProductVersion", "3.1.5.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/Resources/winrc/Updater.rc b/Telegram/Resources/winrc/Updater.rc
index cb7feada9..a0f4a50c8 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 3,1,4,0
- PRODUCTVERSION 3,1,4,0
+ FILEVERSION 3,1,5,0
+ PRODUCTVERSION 3,1,5,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -53,10 +53,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop Updater"
-            VALUE "FileVersion", "3.1.4.0"
+            VALUE "FileVersion", "3.1.5.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2021"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "3.1.4.0"
+            VALUE "ProductVersion", "3.1.5.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/SourceFiles/core/changelogs.cpp b/Telegram/SourceFiles/core/changelogs.cpp
index e28207e9d..3315cacea 100644
--- a/Telegram/SourceFiles/core/changelogs.cpp
+++ b/Telegram/SourceFiles/core/changelogs.cpp
@@ -68,6 +68,25 @@ std::map<int, const char*> BetaLogs() {
 		"- Reconnect without timeout when network availability changes.\n"
 
 		"- Crash fixes."
+	},
+	{
+		3001005,
+		"- Choose one of 8 new preset themes for any individual private chat.\n"
+
+		"- Click on '...' menu > 'Change Colors' to pick a theme.\n"
+
+		"- Both chat participants will see the same theme in that chat "
+		"– on all their devices.\n"
+
+		"- Each new theme features colorful gradient message bubbles, "
+		"beautifully animated backgrounds and unique background patterns.\n"
+
+		"- All chat themes have day and night versions and will follow "
+		"your overall dark mode settings.\n"
+
+		"- Implement main window rounded corners on Windows 11.\n"
+
+		"- Fix audio capture from AirPods on macOS.\n"
 	}
 	};
 };
diff --git a/Telegram/SourceFiles/core/version.h b/Telegram/SourceFiles/core/version.h
index 2fdc24e0e..7d8434fb0 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 = 3001004;
-constexpr auto AppVersionStr = "3.1.4";
+constexpr auto AppVersion = 3001005;
+constexpr auto AppVersionStr = "3.1.5";
 constexpr auto AppBetaVersion = true;
 constexpr auto AppAlphaVersion = TDESKTOP_ALPHA_VERSION;
diff --git a/Telegram/build/version b/Telegram/build/version
index 37dfc38e5..45e8c1347 100644
--- a/Telegram/build/version
+++ b/Telegram/build/version
@@ -1,7 +1,7 @@
-AppVersion         3001004
+AppVersion         3001005
 AppVersionStrMajor 3.1
-AppVersionStrSmall 3.1.4
-AppVersionStr      3.1.4
+AppVersionStrSmall 3.1.5
+AppVersionStr      3.1.5
 BetaChannel        1
 AlphaVersion       0
-AppVersionOriginal 3.1.4.beta
+AppVersionOriginal 3.1.5.beta
diff --git a/changelog.txt b/changelog.txt
index 53fe1a40a..221d4d06e 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,13 @@
+3.1.5 beta (28.09.21)
+
+- Choose one of 8 new preset themes for any individual private chat.
+- Click on '...' menu > 'Change Colors' to pick a theme.
+- Both chat participants will see the same theme in that chat – on all their devices.
+- Each new theme features colorful gradient message bubbles, beautifully animated backgrounds and unique background patterns.
+- All chat themes have day and night versions and will follow your overall dark mode settings.
+- Implement main window rounded corners on Windows 11.
+- Fix audio capture from AirPods on macOS.
+
 3.1.4 beta (27.09.21)
 
 - Fix crash in network availability init.