diff --git a/pkgs/applications/video/mkvtoolnix/default.nix b/pkgs/applications/video/mkvtoolnix/default.nix
index 4736dedcb84f..7ccf0e24762a 100644
--- a/pkgs/applications/video/mkvtoolnix/default.nix
+++ b/pkgs/applications/video/mkvtoolnix/default.nix
@@ -13,13 +13,13 @@ with stdenv.lib;
 
 stdenv.mkDerivation rec {
   pname = "mkvtoolnix";
-  version = "42.0.0";
+  version = "43.0.0";
 
   src = fetchFromGitLab {
     owner  = "mbunkus";
     repo   = "mkvtoolnix";
     rev    = "release-${version}";
-    sha256 = "0bjb1cx1sj61yhpraqryhxma4wiz0yl3asnbsv9hvq730v07hg0b";
+    sha256 = "0ra9kgvhh5yhbr0hsia1va5lw45zr4kdwcdjhas5ljjyj75mlyxc";
   };
 
   nativeBuildInputs = [