diff --git a/pkgs/development/compilers/circt/default.nix b/pkgs/development/compilers/circt/default.nix
index 6e9d5fc4929a..552109b12da6 100644
--- a/pkgs/development/compilers/circt/default.nix
+++ b/pkgs/development/compilers/circt/default.nix
@@ -13,12 +13,12 @@ let
 in
 stdenv.mkDerivation rec {
   pname = "circt";
-  version = "1.37.0";
+  version = "1.40.0";
   src = fetchFromGitHub {
     owner = "llvm";
     repo = "circt";
     rev = "firtool-${version}";
-    sha256 = "sha256-jagI5pXH3+4K0cvRfFMFqcRe/FWFCunrckPFAQL7mPo=";
+    sha256 = "sha256-L114Xh0O/Wu8IyrKohxalyXeSe/8oVcAXD4hpa6ocwU=";
     fetchSubmodules = true;
   };