diff --git a/pkgs/by-name/st/steam/package.nix b/pkgs/by-name/st/steam/package.nix
index 0a9ba6105321..7d7a18405606 100644
--- a/pkgs/by-name/st/steam/package.nix
+++ b/pkgs/by-name/st/steam/package.nix
@@ -45,6 +45,7 @@ let
           lsb-release # not documented, called from Big Picture
           pciutils # not documented, complains about lspci on startup
           glibc_multi.bin
+          xdg-utils # calls xdg-open occasionally
           xz
           zenity