diff --git a/artiq-fast/pkgs/python-deps.nix b/artiq-fast/pkgs/python-deps.nix
index f35264a..05645b8 100644
--- a/artiq-fast/pkgs/python-deps.nix
+++ b/artiq-fast/pkgs/python-deps.nix
@@ -104,13 +104,13 @@ rec {
 
   migen = python3Packages.buildPythonPackage rec {
     pname = "migen";
-    version = "unstable-2021-10-07";
+    version = "unstable-2021-10-14";
 
     src = fetchFromGitHub {
       owner = "m-labs";
       repo = "migen";
-      rev = "6e3f8e565704b4293174aedfb15b3470d233f528";
-      sha256 = "127xlidkd5n42w72yj77cprs7934qr7p88a3ahls6454adcpxf3y";
+      rev = "7507a2bb16dd2cac63535175ce67fb30dfdae1c0";
+      sha256 = "0ngh6y8sza3zlrsp9nkylf7nb2phklm82bprga4fphm0y3qrs393";
     };
 
     propagatedBuildInputs = with python3Packages; [ colorama ];