diff --git a/modules/nixos/default.nix b/modules/nixos/default.nix
index d114eb6..39a8ad9 100644
--- a/modules/nixos/default.nix
+++ b/modules/nixos/default.nix
@@ -2,6 +2,7 @@
   imports = [
     ./apps-optional.nix
     ./backlight.nix
+    ./flatpak.nix
     ./btop.nix
     ./boot.nix
     ./fonts.nix
diff --git a/modules/nixos/flatpak.nix b/modules/nixos/flatpak.nix
new file mode 100644
index 0000000..4689ed5
--- /dev/null
+++ b/modules/nixos/flatpak.nix
@@ -0,0 +1,6 @@
+{pkgs, ...}: {
+  services.flatpak.enable = true;
+
+  # GTK portal required by most Flatpak apps for file chooser and other dialogs
+  xdg.portal.extraPortals = [pkgs.xdg-desktop-portal-gtk];
+}