diff --git a/pkgs/by-name/un/unvanquished/package.nix b/pkgs/by-name/un/unvanquished/package.nix
index ef32e161cd3fd..0729b5f6b7f96 100644
--- a/pkgs/by-name/un/unvanquished/package.nix
+++ b/pkgs/by-name/un/unvanquished/package.nix
@@ -20,6 +20,7 @@
   libpng,
   libvorbis,
   libwebp,
+  libX11,
   lua5,
   makeDesktopItem,
   ncurses,
@@ -171,6 +172,7 @@ stdenv.mkDerivation rec {
     libvorbis
     libjpeg
     libwebp
+    libX11
     libpng
   ];