diff --git a/pkgs/applications/video/mkvtoolnix/default.nix b/pkgs/applications/video/mkvtoolnix/default.nix
index 7db27888782a..87b4a5418cef 100644
--- a/pkgs/applications/video/mkvtoolnix/default.nix
+++ b/pkgs/applications/video/mkvtoolnix/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     (enableFeature withGUI "qt")
   ];
 
-  CXXFLAGS = optional stdenv.cc.isClang "-std=c++14";
+  CXXFLAGS = optional stdenv.cc.isClang "-std=c++17";
 
   dontWrapQtApps = true;
   postFixup = optionalString withGUI ''