diff --git a/artiq-fast/default.nix b/artiq-fast/default.nix
index 3db6843..5dce39c 100644
--- a/artiq-fast/default.nix
+++ b/artiq-fast/default.nix
@@ -20,7 +20,7 @@ let
       }) {} boards;
 
   mainPackages = rec {
-    inherit (pythonDeps) sipyco asyncserial pythonparser pyqtgraph-qt5 artiq-netboot misoc migen microscope jesd204b migen-axi lit outputcheck;
+    inherit (pythonDeps) sipyco asyncserial pythonparser pyqtgraph-qt5 artiq-netboot misoc migen microscope jesd204b migen-axi lit outputcheck qasync;
     binutils-or1k = callPackage ./pkgs/binutils.nix { platform = "or1k"; target = "or1k-linux"; };
     binutils-arm = callPackage ./pkgs/binutils.nix { platform = "arm"; target = "armv7-unknown-linux-gnueabihf"; };
     llvm-or1k = callPackage ./pkgs/llvm-or1k.nix {};