diff --git a/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix
index bd2f9e4b3f5e..f627647e1efb 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.nix
@@ -56,6 +56,10 @@ stdenv.mkDerivation {
     fetchSubmodules = true;
   };
 
+  patches = [
+    ./tg_owt.patch
+  ];
+
   postPatch = lib.optionalString stdenv.isLinux ''
     substituteInPlace src/modules/desktop_capture/linux/egl_dmabuf.cc \
       --replace '"libEGL.so.1"' '"${libGL}/lib/libEGL.so.1"' \
diff --git a/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.patch b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.patch
new file mode 100644
index 000000000000..05332d51c047
--- /dev/null
+++ b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/tg_owt.patch
@@ -0,0 +1,23 @@
+--- a/src/modules/include/module_common_types_public.h
++++ b/src/modules/include/module_common_types_public.h
+@@ -11,6 +11,7 @@
+ #ifndef MODULES_INCLUDE_MODULE_COMMON_TYPES_PUBLIC_H_
+ #define MODULES_INCLUDE_MODULE_COMMON_TYPES_PUBLIC_H_
+ 
++#include <cstdint>
+ #include <limits>
+ 
+ #include "absl/types/optional.h"
+diff --git a/src/common_video/h265/h265_pps_parser.h b/src/common_video/h265/h265_pps_parser.h
+index 28c95ea9..790b0b73 100644
+--- a/src/common_video/h265/h265_pps_parser.h
++++ b/src/common_video/h265/h265_pps_parser.h
+@@ -13,6 +13,8 @@
+ 
+ #include "absl/types/optional.h"
+ 
++#include <stdint.h>
++
+ namespace rtc {
+ class BitBuffer;
+ }
diff --git a/pkgs/development/libraries/tl-expected/default.nix b/pkgs/development/libraries/tl-expected/default.nix
index c7cb92440ee8..79af37f58e6f 100644
--- a/pkgs/development/libraries/tl-expected/default.nix
+++ b/pkgs/development/libraries/tl-expected/default.nix
@@ -2,14 +2,14 @@
 
 stdenv.mkDerivation rec {
   pname = "tl-expected-unstable";
-  version = "2019-11-11"; # 5 commits ahead of version 1.0.0
+  version = "2023-02-15"; # 37 commits ahead of version 1.0.0
 
   src = fetchFromGitHub {
     owner = "TartanLlama";
     repo = "expected";
-    rev = "1d9c5d8c0da84b8ddc54bd3d90d632eec95c1f13";
+    rev = "9d812f5e3b5bc68023f6e31d29489cdcaacef606";
     fetchSubmodules = true;
-    sha256 = "0rzfn9yyg70zwpxbmv22qy0015baymi2rdd65ixmcb31fgnap68i";
+    hash = "sha256-ZokcGQgHH37nmTMLmxFcun4S1RjXuXb9NfWHet8Fbc4=";
   };
 
   nativeBuildInputs = [ cmake ];