diff --git a/Telegram/Resources/uwp/AppX/AppxManifest.xml b/Telegram/Resources/uwp/AppX/AppxManifest.xml
index c6fc52d58b..f323ed664e 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="1.6.5.0" />
+    Version="1.6.6.0" />
   <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 4b0b8d5085..2fd6a8119b 100644
--- a/Telegram/Resources/winrc/Telegram.rc
+++ b/Telegram/Resources/winrc/Telegram.rc
@@ -34,8 +34,8 @@ IDI_ICON1               ICON                    "..\\art\\icon256.ico"
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,6,5,0
- PRODUCTVERSION 1,6,5,0
+ FILEVERSION 1,6,6,0
+ PRODUCTVERSION 1,6,6,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -52,10 +52,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram Messenger LLP"
             VALUE "FileDescription", "Telegram Desktop"
-            VALUE "FileVersion", "1.6.5.0"
+            VALUE "FileVersion", "1.6.6.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2019"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "1.6.5.0"
+            VALUE "ProductVersion", "1.6.6.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/Resources/winrc/Updater.rc b/Telegram/Resources/winrc/Updater.rc
index 37c9c8376c..fccbab294c 100644
--- a/Telegram/Resources/winrc/Updater.rc
+++ b/Telegram/Resources/winrc/Updater.rc
@@ -25,8 +25,8 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,6,5,0
- PRODUCTVERSION 1,6,5,0
+ FILEVERSION 1,6,6,0
+ PRODUCTVERSION 1,6,6,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -43,10 +43,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram Messenger LLP"
             VALUE "FileDescription", "Telegram Desktop Updater"
-            VALUE "FileVersion", "1.6.5.0"
+            VALUE "FileVersion", "1.6.6.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2019"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "1.6.5.0"
+            VALUE "ProductVersion", "1.6.6.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/SourceFiles/core/version.h b/Telegram/SourceFiles/core/version.h
index 7498887d3b..bf57bdd881 100644
--- a/Telegram/SourceFiles/core/version.h
+++ b/Telegram/SourceFiles/core/version.h
@@ -15,7 +15,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #define TDESKTOP_ALPHA_VERSION (0ULL)
 #endif // TDESKTOP_OFFICIAL_TARGET
 
-constexpr auto AppVersion = 1006005;
-constexpr auto AppVersionStr = "1.6.5";
+constexpr auto AppVersion = 1006006;
+constexpr auto AppVersionStr = "1.6.6";
 constexpr auto AppBetaVersion = true;
 constexpr auto AppAlphaVersion = TDESKTOP_ALPHA_VERSION;
diff --git a/Telegram/build/version b/Telegram/build/version
index 426390decb..f870fd4459 100644
--- a/Telegram/build/version
+++ b/Telegram/build/version
@@ -1,6 +1,6 @@
-AppVersion         1006005
+AppVersion         1006006
 AppVersionStrMajor 1.6
-AppVersionStrSmall 1.6.5
-AppVersionStr      1.6.5
+AppVersionStrSmall 1.6.6
+AppVersionStr      1.6.6
 BetaChannel        1
 AlphaVersion       0
diff --git a/changelog.txt b/changelog.txt
index 5189333cdb..12e753db72 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,7 @@
+1.6.6 beta (11.04.19)
+
+- Bug fixes and other minor improvements.
+
 1.6.5 beta (06.04.19)
 
 - Bug fixes and other minor improvements.