diff --git a/Telegram/Resources/uwp/AppX/AppxManifest.xml b/Telegram/Resources/uwp/AppX/AppxManifest.xml
index a0a839c3a..c2efb245d 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="2.6.5.0" />
+    Version="2.6.6.0" />
   <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 0e29285ce..673350f43 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 2,6,5,0
- PRODUCTVERSION 2,6,5,0
+ FILEVERSION 2,6,6,0
+ PRODUCTVERSION 2,6,6,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -62,10 +62,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop"
-            VALUE "FileVersion", "2.6.5.0"
+            VALUE "FileVersion", "2.6.6.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2021"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "2.6.5.0"
+            VALUE "ProductVersion", "2.6.6.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/Resources/winrc/Updater.rc b/Telegram/Resources/winrc/Updater.rc
index 34979fa34..69b92b906 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 2,6,5,0
- PRODUCTVERSION 2,6,5,0
+ FILEVERSION 2,6,6,0
+ PRODUCTVERSION 2,6,6,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -53,10 +53,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop Updater"
-            VALUE "FileVersion", "2.6.5.0"
+            VALUE "FileVersion", "2.6.6.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2021"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "2.6.5.0"
+            VALUE "ProductVersion", "2.6.6.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/SourceFiles/core/version.h b/Telegram/SourceFiles/core/version.h
index e72cf3857..6538e7c37 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 = 2006005;
-constexpr auto AppVersionStr = "2.6.5";
+constexpr auto AppVersion = 2006006;
+constexpr auto AppVersionStr = "2.6.6";
 constexpr auto AppBetaVersion = true;
 constexpr auto AppAlphaVersion = TDESKTOP_ALPHA_VERSION;
diff --git a/Telegram/build/version b/Telegram/build/version
index 4e1e12a28..9f6a151f0 100644
--- a/Telegram/build/version
+++ b/Telegram/build/version
@@ -1,7 +1,7 @@
-AppVersion         2006005
+AppVersion         2006006
 AppVersionStrMajor 2.6
-AppVersionStrSmall 2.6.5
-AppVersionStr      2.6.5
+AppVersionStrSmall 2.6.6
+AppVersionStr      2.6.6
 BetaChannel        1
 AlphaVersion       0
-AppVersionOriginal 2.6.5.beta
+AppVersionOriginal 2.6.6.beta
diff --git a/changelog.txt b/changelog.txt
index a1212955e..7ba62fbe0 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,7 @@
+2.6.6 beta (18.03.21)
+
+- Fix joining popular voice chats.
+
 2.6.5 beta (17.03.21)
 
 - Improvements and fixes in new voice chat features.