diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 129fc1b8610e..e9d6231c9eb8 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14660,7 +14660,7 @@ with pkgs;
       avahi = avahi.override {
         withLibdnssdCompat = true;
       };
-      qt5 = qt55; # Mumble doesn't work with newer Qt versions.
+      qt5 = qt56; # Mumble doesn't work with Qt > 5.5
       jackSupport = config.mumble.jackSupport or false;
       speechdSupport = config.mumble.speechdSupport or false;
       pulseSupport = config.pulseaudio or false;