diff --git a/pkgs/development/tools/trellis/default.nix b/pkgs/development/tools/trellis/default.nix
index 89287b2ac4fa..c9884a8eacd8 100644
--- a/pkgs/development/tools/trellis/default.nix
+++ b/pkgs/development/tools/trellis/default.nix
@@ -3,23 +3,20 @@
 , cmake
 }:
 
-let
-  boostWithPython3 = boost.override { python = python3; enablePython = true; };
-in
 stdenv.mkDerivation rec {
   pname = "trellis";
-  version = "2020.11.07";
+  version = "2020.11.25";
 
   # git describe --tags
   realVersion = with stdenv.lib; with builtins;
-    "1.0-469-g${substring 0 7 (elemAt srcs 0).rev}";
+    "1.0-476-g${substring 0 7 (elemAt srcs 0).rev}";
 
   srcs = [
     (fetchFromGitHub {
        owner  = "SymbiFlow";
        repo   = "prjtrellis";
-       rev    = "b013a135a9b95c18ece559e19aa73ad6c84446c9";
-       sha256 = "09bx30jm9bgdxmbxf49a27spg4yd1nk5r5mympq7xi28hq1xwjnf";
+       rev    = "a441cd9d0390648e96bf27096626eb2c904096de";
+       sha256 = "1rsck44n4mf9v3vfac51ksrhcs84s7q297nq1kjkzzvmsx09gd9k";
        name   = "trellis";
      })
 
@@ -33,7 +30,7 @@ stdenv.mkDerivation rec {
   ];
   sourceRoot = "trellis";
 
-  buildInputs = [ boostWithPython3 ];
+  buildInputs = [ boost ];
   nativeBuildInputs = [ cmake python3 ];
   cmakeFlags = [
     "-DCURRENT_GIT_VERSION=${realVersion}"