diff --git a/pkgs/development/libraries/mtxclient/default.nix b/pkgs/development/libraries/mtxclient/default.nix
index 15c82cb1282..3ab1e0a7974 100644
--- a/pkgs/development/libraries/mtxclient/default.nix
+++ b/pkgs/development/libraries/mtxclient/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, cmake, pkgconfig
+{ stdenv, fetchFromGitHub, fetchpatch, cmake, pkgconfig
 , boost, openssl, zlib, libsodium, olm, gtest, spdlog, nlohmann_json }:
 
 stdenv.mkDerivation rec {
@@ -12,6 +12,14 @@ stdenv.mkDerivation rec {
     sha256 = "19v1qa6mzvc65m7wy7x0g4i24bcg9xk31y1grwvd3zr0l4v6xcgs";
   };
 
+  patches = [
+    # remove on the next mtxclient update
+    (fetchpatch {
+      url = "https://github.com/Nheko-Reborn/mtxclient/commit/41314809da7eb17ec00cff1795af6a528c5e904a.diff";
+      sha256 = "17pzrkdhd4jr8xwd7hhyzak880k8yb9nkg3vcbyjfp5si89dha5j";
+    })
+  ];
+
   postPatch = ''
     ln -s ${nlohmann_json}/include/nlohmann/json.hpp include/json.hpp
   '';