diff --git a/flake.nix b/flake.nix
index 3a025a9..ae66bea 100644
--- a/flake.nix
+++ b/flake.nix
@@ -467,6 +467,12 @@
             "mingw-w64-x86_64-artiq-comtools"
           ];
         };
+        msys2-asyncserial = msys2.makeMsys2Package {
+          name = "python-asyncserial";
+          version = artiq.packages.x86_64-linux.asyncserial.version;
+          src = artiq.packages.x86_64-linux.asyncserial.src;
+          depends = [ "mingw-w64-x86_64-python" ];
+        };
         msys2-korad_ka3005p = msys2.makeMsys2Package {
           name = "korad_ka3005p";
           version = korad_ka3005p.version;
@@ -511,6 +517,7 @@
         };
         msys2-repos = msys2.makeMsys2Repos [
           msys2-levenshtein msys2-pythonparser msys2-sipyco msys2-artiq-comtools msys2-artiq
+          msys2-asyncserial
           msys2-korad_ka3005p
           msys2-novatech409b
           msys2-lda