diff --git a/x-plane/default.nix b/x-plane/default.nix
index c95fbd5..e006151 100644
--- a/x-plane/default.nix
+++ b/x-plane/default.nix
@@ -201,7 +201,7 @@ in buildFHSUserEnv rec {
   targetPkgs = pkgs: (with pkgs; [ unzip atk gdk-pixbuf cairo pango mesa_glu libGL openalSoft gtk2 glib dbus pulseaudio vulkan-tools vulkan-loader ] ++
                      (with xorg; [ libX11 libXext libXrandr libXcursor libXinerama ]) ++
                      # X-Plane 12
-                     [ nss harfbuzz nspr cups at-spi2-core at-spi2-atk libdrm expat alsa-lib mesa ] ++
+                     [ zlib nss harfbuzz nspr cups at-spi2-core at-spi2-atk libdrm expat alsa-lib mesa ] ++
                      (with xorg; [ libXcomposite libXdamage libXfixes libxcb libxkbcommon ]) ++
                      # For reality expansion pack
                      [ stdenv.cc.cc.lib curl openssl ] ++