diff --git a/network/chat/telegram-desktop/actions.py b/network/chat/telegram-desktop/actions.py
index 7cbe1d2a1b..1189c9e077 100644
--- a/network/chat/telegram-desktop/actions.py
+++ b/network/chat/telegram-desktop/actions.py
@@ -14,7 +14,7 @@ from pisi.actionsapi import get
 
 def setup():
     shelltools.export("NINJAJOBS", "-j 4")
-    #shelltools.export("LC_ALL", "en_US.UTF-8")
+    shelltools.system("patch -p1 < fix-tgcalls-cstdint.patch -d Telegram/ThirdParty/tgcalls")
     shelltools.system("sed -i 's/DESKTOP_APP_USE_PACKAGED/NO_ONE_WILL_EVER_SET_THIS/' \
 		cmake/external/rlottie/CMakeLists.txt || die")
     shelltools.system('echo "target_link_libraries(external_webrtc INTERFACE jpeg Xcomposite Xdamage Xext Xfixes Xrandr Xrender Xtst X11)" | tee -a cmake/external/webrtc/CMakeLists.txt')
diff --git a/network/chat/telegram-desktop/files/fix-tgcalls-cstdint.patch b/network/chat/telegram-desktop/files/fix-tgcalls-cstdint.patch
new file mode 100644
index 0000000000..88612ebe3a
--- /dev/null
+++ b/network/chat/telegram-desktop/files/fix-tgcalls-cstdint.patch
@@ -0,0 +1,12 @@
+diff --git a/tgcalls/utils/gzip.h b/tgcalls/utils/gzip.h
+index a3f3ea2..7ae5cc5 100644
+--- a/tgcalls/utils/gzip.h
++++ b/tgcalls/utils/gzip.h
+@@ -3,6 +3,7 @@
+ 
+ #include <absl/types/optional.h>
+ #include <vector>
++#include <cstdint>
+ 
+ namespace tgcalls {
+ 
diff --git a/network/chat/telegram-desktop/pspec.xml b/network/chat/telegram-desktop/pspec.xml
index 8e24e2d649..0e20add6fd 100644
--- a/network/chat/telegram-desktop/pspec.xml
+++ b/network/chat/telegram-desktop/pspec.xml
@@ -12,7 +12,11 @@
         <IsA>app:gui</IsA>
         <Summary>Official Telegram Desktop client</Summary>
         <Description>Telegram is a messaging app with a focus on speed and security, it is super-fast, simple and free. You can use Telegram on all your devices at the same time — your messages sync seamlessly across any number of your phones, tablets or computers.</Description>
-        <Archive sha1sum="171c89344462e6079aa0e16b60ec487398690094" type="targz">https://github.com/telegramdesktop/tdesktop/releases/download/v3.7.1/tdesktop-3.7.1-full.tar.gz</Archive>
+        <Archive sha1sum="d5ecd48b9c2698ed002eb0b7ca2cb6100defbf5e" type="targz">https://github.com/telegramdesktop/tdesktop/releases/download/v4.0.2/tdesktop-4.0.2-full.tar.gz</Archive>
+
+        <AdditionalFiles>
+            <AdditionalFile target="fix-tgcalls-cstdint.patch" permission="0644">fix-tgcalls-cstdint.patch</AdditionalFile>
+        </AdditionalFiles>
         <BuildDependencies>
             <Dependency>cmake</Dependency>
             <Dependency>ninja</Dependency>
@@ -47,7 +51,8 @@
             <Dependency>pipewire-devel</Dependency>
         </BuildDependencies>
         <Patches>
-            <Patch level="1">tdesktop.patch</Patch>
+<!--             <Patch level="1">tdesktop.patch</Patch> -->
+<!--             <Patch level="1">fix-tgcalls-cstdint.patch</Patch> -->
         </Patches>
     </Source>
 
@@ -98,6 +103,13 @@
     </Package>
 
     <History>
+        <Update release="12">
+            <Date>2022-06-29</Date>
+            <Version>4.0.2</Version>
+            <Comment>Version bump.</Comment>
+            <Name>Mustafa Cinasal</Name>
+            <Email>muscnsl@gmail.com</Email>
+        </Update>
         <Update release="11">
             <Date>2022-04-22</Date>
             <Version>3.7.1</Version>