diff --git a/pkgs/applications/networking/protonvpn-gui/default.nix b/pkgs/applications/networking/protonvpn-gui/default.nix
index 46ac403b0d89..ef128932f7c0 100644
--- a/pkgs/applications/networking/protonvpn-gui/default.nix
+++ b/pkgs/applications/networking/protonvpn-gui/default.nix
@@ -3,6 +3,7 @@
 , fetchFromGitHub
 , wrapGAppsHook
 , gdk-pixbuf
+, glib-networking
 , gobject-introspection
 , imagemagick
 , librsvg
@@ -34,6 +35,7 @@ buildPythonApplication rec {
   ];
 
   propagatedBuildInputs = [
+    glib-networking # needed for the login captcha
     protonvpn-nm-lib
     psutil
   ];