diff --git a/cpld/default.nix b/cpld/default.nix
index 893e253..ccea313 100644
--- a/cpld/default.nix
+++ b/cpld/default.nix
@@ -35,12 +35,12 @@ in
       src = <urukulSrc>;
     };
     urukul-cpld-release = buildUrukulCpld rec {
-      version = "1.3.1";
+      version = "1.4.0";
       src = pkgs.fetchFromGitHub {
         owner = "quartiq";
         repo = "urukul";
         rev = "v${version}";
-        sha256 = "1nvarspqbf9f7b27j34jkkh4mj6rwrlmccmfpz5nnzk3h2j6zbqc";
+        sha256 = "1962jpzqzn22cwkcmfnvwqlj5i89pljhgfk64n6pk73clir9mp0w";
       };
     };
     mirny-cpld-master = buildMirnyCpld {