diff --git a/pkgs/applications/video/mkvtoolnix/default.nix b/pkgs/applications/video/mkvtoolnix/default.nix
index 8fc656981a3a..bba037718596 100644
--- a/pkgs/applications/video/mkvtoolnix/default.nix
+++ b/pkgs/applications/video/mkvtoolnix/default.nix
@@ -8,6 +8,7 @@
 , cmark
 , docbook_xsl
 , expat
+, fetchpatch2
 , file
 , flac
 , fmt
@@ -94,6 +95,11 @@ stdenv.mkDerivation rec {
   ++ optionals stdenv.isLinux [ qtwayland ]
   ++ optionals stdenv.isDarwin [ libiconv ];
 
+  patches = [ (fetchpatch2 {
+    url = "https://gitlab.com/mbunkus/mkvtoolnix/-/commit/7e1bea9527616ab6ab38425e7290579f05dd9bb1.patch";
+    hash = "sha256-9UZrfwrzfKwF8XDzqYnuaDgZws7l1YAb5O1O1+nxo0g=";
+  }) ];
+
   # autoupdate is not needed but it silences a ton of pointless warnings
   postPatch = ''
     patchShebangs . > /dev/null