diff --git a/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix b/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
index 47aa7c7330f2..959d1a96d8e1 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
@@ -1,8 +1,8 @@
-{ mkDerivation, lib, fetchFromGitHub, callPackage
+{ mkDerivation, lib, fetchFromGitHub, callPackage, fetchpatch
 , pkg-config, cmake, ninja, python3, wrapGAppsHook, wrapQtAppsHook, removeReferencesTo
 , qtbase, qtimageformats, gtk3, libsForQt5, lz4, xxHash
 , ffmpeg, openalSoft, minizip, libopus, alsa-lib, libpulseaudio, range-v3
-, tl-expected, hunspell, glibmm, webkitgtk
+, tl-expected, hunspell, glibmm, webkitgtk, jemalloc
 , libtgvoip, rnnoise, abseil-cpp, extra-cmake-modules
 # Transitive dependencies:
 , pcre, xorg, util-linux, libselinux, libsepol, epoxy
@@ -23,7 +23,7 @@ let
   tg_owt = callPackage ./tg_owt.nix {};
 in mkDerivation rec {
   pname = "telegram-desktop";
-  version = "2.8.4";
+  version = "2.8.11";
   # Note: Update via pkgs/applications/networking/instant-messengers/telegram/tdesktop/update.py
 
   # Telegram-Desktop with submodules
@@ -32,9 +32,17 @@ in mkDerivation rec {
     repo = "tdesktop";
     rev = "v${version}";
     fetchSubmodules = true;
-    sha256 = "sha256-IN3GQgdNM66/GxKa5EGKB/LIkgBxS8Y4mkPBaSEphmw=";
+    sha256 = "020ycgb77vx7rza590i3csrvq1zgm15rvpxqqcp0xkb4yh71i3hb";
   };
 
+  patches = [(fetchpatch {
+    # ref: https://github.com/desktop-app/lib_webview/pull/9
+    url = "https://github.com/desktop-app/lib_webview/commit/75e924934eee8624020befbef1f3cb5b865d3b86.patch";
+    sha256 = "sha256-rN4FVK4KT+xNf9IVdcpbxMqT0+t3SINJPRRQPyMiDP0=";
+    stripLen = 1;
+    extraPrefix = "Telegram/lib_webview/";
+  })];
+
   postPatch = ''
     substituteInPlace Telegram/CMakeLists.txt \
       --replace '"''${TDESKTOP_LAUNCHER_BASENAME}.appdata.xml"' '"''${TDESKTOP_LAUNCHER_BASENAME}.metainfo.xml"'
@@ -49,7 +57,7 @@ in mkDerivation rec {
   buildInputs = [
     qtbase qtimageformats gtk3 libsForQt5.kwayland libsForQt5.libdbusmenu lz4 xxHash
     ffmpeg openalSoft minizip libopus alsa-lib libpulseaudio range-v3
-    tl-expected hunspell glibmm webkitgtk
+    tl-expected hunspell glibmm webkitgtk jemalloc
     libtgvoip rnnoise abseil-cpp extra-cmake-modules
     tg_owt
     # Transitive dependencies:
diff --git a/pkgs/development/libraries/libtgvoip/default.nix b/pkgs/development/libraries/libtgvoip/default.nix
index 8ffd07731273..3c10220fffbc 100644
--- a/pkgs/development/libraries/libtgvoip/default.nix
+++ b/pkgs/development/libraries/libtgvoip/default.nix
@@ -7,13 +7,13 @@ with lib;
 
 stdenv.mkDerivation rec {
   pname = "libtgvoip";
-  version = "unstable-2021-01-01";
+  version = "unstable-2021-07-13";
 
   src = fetchFromGitHub {
     owner = "telegramdesktop";
     repo = "libtgvoip";
-    rev = "13a5fcb16b04472d808ce122abd695dbf5d206cd";
-    sha256 = "12p6s7vxkf1gh1spdckkdxrx7bjzw881ds9bky7l5fw751cwb3xd";
+    rev = "f321e7c8cc086bac6ae06fa0934aac7d9833a310";
+    sha256 = "1gk5nsqhbnn1cdh83b70qr3d3v2c1bncylvgn77vvj8vnyjlmnfq";
   };
 
   # To fix the build without external webrtc: