diff --git a/artiq-fast/pkgs/python-deps.nix b/artiq-fast/pkgs/python-deps.nix
index 251482b..2a45921 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-2021-10-14";
+    version = "unstable-2021-11-12";
 
     src = fetchFromGitHub {
       owner = "m-labs";
       repo = "migen";
-      rev = "7507a2bb16dd2cac63535175ce67fb30dfdae1c0";
-      sha256 = "0ngh6y8sza3zlrsp9nkylf7nb2phklm82bprga4fphm0y3qrs393";
+      rev = "9a0be7a4210ff96043412539eb5388659b81831d";
+      sha256 = "sha256-V3ThFSo2d7OC4SHE0lCkKGQKeFXmvxtwZRWe5NMU3nM=";
     };
 
     propagatedBuildInputs = with python3Packages; [ colorama ];