diff --git a/pkgs/development/libraries/xdg-desktop-portal/default.nix b/pkgs/development/libraries/xdg-desktop-portal/default.nix
index 0adeef13b04f..31c4fa4a8685 100644
--- a/pkgs/development/libraries/xdg-desktop-portal/default.nix
+++ b/pkgs/development/libraries/xdg-desktop-portal/default.nix
@@ -1,6 +1,7 @@
 {
   lib,
   fetchFromGitHub,
+  fetchFromGitLab,
   flatpak,
   fuse3,
   bubblewrap,
@@ -32,9 +33,19 @@
   enableSystemd ? true,
 }:
 
+let
+  # Update this revision when updating this package, found in https://github.com/flatpak/xdg-desktop-portal/blob/master/subprojects/libglnx.wrap
+  libglnxSrc = fetchFromGitLab {
+    domain = "gitlab.gnome.org";
+    owner = "GNOME";
+    repo = "libglnx";
+    rev = "ccea836b799256420788c463a638ded0636b1632";
+    hash = "sha256-H8Bg9QCSkt/aBOaHLyHYC2ei6OU7UpcLq8zLurkYOuA=";
+  };
+in
 stdenv.mkDerivation (finalAttrs: {
   pname = "xdg-desktop-portal";
-  version = "1.20.3";
+  version = "1.20.4";
 
   outputs = [
     "out"
@@ -46,7 +57,7 @@ stdenv.mkDerivation (finalAttrs: {
     owner = "flatpak";
     repo = "xdg-desktop-portal";
     tag = finalAttrs.version;
-    hash = "sha256-ntTGEsk8GlXkp3i9RtF+T7jqnNdL2GVbu05d68WVTYc=";
+    hash = "sha256-wLQgJsVicOb8G7M5Qwd+t90UgNYTD04bZ5Ki85Alr1w=";
   };
 
   patches = [
@@ -145,6 +156,9 @@ stdenv.mkDerivation (finalAttrs: {
   doCheck = true;
 
   postPatch = ''
+    mkdir -p subprojects/libglnx
+    cp -r ${libglnxSrc}/* subprojects/libglnx/
+
     # until/unless bubblewrap ships a pkg-config file, meson has no way to find it when cross-compiling.
     substituteInPlace meson.build \
       --replace-fail "find_program('bwrap'"  "find_program('${lib.getExe bubblewrap}'"