diff --git a/eda/nmigen.nix b/eda/nmigen.nix
index 37eaf87..04c6690 100644
--- a/eda/nmigen.nix
+++ b/eda/nmigen.nix
@@ -6,8 +6,8 @@ python3Packages.buildPythonPackage {
   src = fetchFromGitHub {
     owner = "m-labs";
     repo = "nmigen";
-    rev = "668ff40a75dea407bd70c49e730d8ff282454883";
-    sha256 = "1lvcralx79ycy2yjyd80dggf02pkwx66d2mla9siivki7z4jllx6";
+    rev = "31c54d32efb9c2851460adc954f5d1fa97800925";
+    sha256 = "0xid8jz61ns4xlj0sicc8r5zk2pnx2891lknhzf328xikwwldc9y";
   };
 
   checkPhase = "PATH=${yosys}/bin:${symbiyosys}/bin:${yices}/bin:$PATH python -m unittest discover nmigen.test -v";