diff --git a/artiq-fast/conda/artiq-deps.nix b/artiq-fast/conda/artiq-deps.nix
deleted file mode 100644
index 3b38e77..0000000
--- a/artiq-fast/conda/artiq-deps.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-[
-  "llvmlite-artiq"
-  "binutils-or1k-linux"
-  "pythonparser"
-  "scipy"
-  "numpy"
-  "prettytable"
-  "h5py"
-  "python-dateutil"
-  "pyqt"
-  "quamash"
-  "pyqtgraph"
-  "pygit2"
-  "python-levenshtein"
-  "sipyco"
-]
diff --git a/artiq-fast/conda/artiq.nix b/artiq-fast/conda/artiq.nix
index 5f8c1db..ab21777 100644
--- a/artiq-fast/conda/artiq.nix
+++ b/artiq-fast/conda/artiq.nix
@@ -6,7 +6,22 @@ let
     name = "artiq";
     inherit version;
     src = import ../pkgs/artiq-src.nix { fetchgit = pkgs.fetchgit; };
-    dependencies = import ./artiq-deps.nix;
+    dependencies = [
+      "llvmlite-artiq"
+      "binutils-or1k-linux"
+      "pythonparser"
+      "scipy"
+      "numpy"
+      "prettytable"
+      "h5py"
+      "python-dateutil"
+      "pyqt"
+      (if (pkgs.lib.strings.versionAtLeast version "6.0") then "qasync" else "quamash")
+      "pyqtgraph"
+      "pygit2"
+      "python-levenshtein"
+      "sipyco"
+    ];
     extraYaml =
     ''
     about:
diff --git a/artiq-fast/default.nix b/artiq-fast/default.nix
index e11a097..69e2f72 100644
--- a/artiq-fast/default.nix
+++ b/artiq-fast/default.nix
@@ -66,6 +66,13 @@ let
         name = "quamash";
         inherit (pkgs.python3Packages.quamash) version src;
       };
+     };
+    conda-qasync = import ./conda/build.nix { inherit pkgs; } {
+      name = "conda-qasync";
+      src = import ./conda/fake-source.nix { inherit pkgs; } {
+        name = "qasync";
+        inherit (pythonDeps.qasync) version src;
+      };
     };
     conda-bscan-spi-bitstreams = import ./conda/bscan-spi-bitstreams.nix {
       inherit pkgs;
diff --git a/artiq-fast/pkgs/artiq.nix b/artiq-fast/pkgs/artiq.nix
index 144bd6e..b4fd615 100644
--- a/artiq-fast/pkgs/artiq.nix
+++ b/artiq-fast/pkgs/artiq.nix
@@ -11,7 +11,8 @@ python3Packages.buildPythonPackage rec {
   propagatedBuildInputs = [ binutils-or1k llvm-or1k llvmlite-artiq ]
     ++ (lib.lists.optionals (lib.strings.versionAtLeast version "6.0") [ binutils-arm ])
     ++ (with pythonDeps; [ sipyco pyqtgraph-qt5 pythonparser ])
-    ++ (with python3Packages; [ pygit2 numpy dateutil quamash scipy prettytable pyserial python-Levenshtein h5py pyqt5 ]);
+    ++ (with python3Packages; [ pygit2 numpy dateutil scipy prettytable pyserial python-Levenshtein h5py pyqt5 ])
+    ++ [(if (lib.strings.versionAtLeast version "6.0") then pythonDeps.qasync else python3Packages.quamash)];
 
   dontWrapQtApps = true;
   postFixup = ''
diff --git a/artiq-fast/pkgs/python-deps.nix b/artiq-fast/pkgs/python-deps.nix
index 6654f13..9966ec0 100644
--- a/artiq-fast/pkgs/python-deps.nix
+++ b/artiq-fast/pkgs/python-deps.nix
@@ -53,6 +53,25 @@ rec {
     propagatedBuildInputs = with python3Packages; [ scipy numpy pyqt5 pyopengl ];
   };
 
+  qasync = python3Packages.buildPythonPackage rec {
+    pname = "qasync";
+    version = "0.10.0";
+
+    src = fetchFromGitHub {
+      owner = "CabbageDevelopment";
+      repo = "qasync";
+      rev = "v${version}";
+      sha256 = "1zga8s6dr7gk6awmxkh4pf25gbg8n6dv1j4b0by7y0fhi949qakq";
+    };
+
+    propagatedBuildInputs = [ python3Packages.pyqt5 ];
+
+    checkInputs = [ python3Packages.pytest ];
+    checkPhase = ''
+      pytest -k 'test_qthreadexec.py' # the others cause the test execution to be aborted, I think because of asyncio
+    '';
+  };
+
   # Development/firmware dependencies
   artiq-netboot = python3Packages.buildPythonPackage rec {
     name = "artiq-netboot";
diff --git a/artiq-fast/windows/run-test.nix b/artiq-fast/windows/run-test.nix
index 1c09ed9..f478516 100644
--- a/artiq-fast/windows/run-test.nix
+++ b/artiq-fast/windows/run-test.nix
@@ -33,6 +33,7 @@ let
       win-put ${artiqpkgs.conda-pythonparser}/noarch/*.tar.bz2 'fake-channel/noarch'
       win-put ${artiqpkgs.conda-sipyco}/noarch/*.tar.bz2 'fake-channel/noarch'
       win-put ${artiqpkgs.conda-quamash}/noarch/*.tar.bz2 'fake-channel/noarch'
+      win-put ${artiqpkgs.conda-qasync}/noarch/*.tar.bz2 'fake-channel/noarch'
       '';
   };
 in