diff --git a/pkgs/tools/misc/gwe/default.nix b/pkgs/tools/misc/gwe/default.nix
index e1576c3f9dc5..1b03756be25b 100644
--- a/pkgs/tools/misc/gwe/default.nix
+++ b/pkgs/tools/misc/gwe/default.nix
@@ -28,6 +28,7 @@ let
    requests
    rx
    gtk3
+   reactivex
  ]);
 in stdenv.mkDerivation rec {
   pname = "gwe";