diff --git a/pkgs/by-name/ci/circt/package.nix b/pkgs/by-name/ci/circt/package.nix
index 042b90c6f51f..712113bdaa3a 100644
--- a/pkgs/by-name/ci/circt/package.nix
+++ b/pkgs/by-name/ci/circt/package.nix
@@ -19,12 +19,12 @@ let
 in
 stdenv.mkDerivation rec {
   pname = "circt";
-  version = "1.98.0";
+  version = "1.99.1";
   src = fetchFromGitHub {
     owner = "llvm";
     repo = "circt";
     rev = "firtool-${version}";
-    hash = "sha256-wkaspxwWJ7xJVQ+VZ9Z85zbzOcLAb3v55EJQjd+jiw8=";
+    hash = "sha256-pnC8BLf2encv7UR10q6rTTpAZ6T0fETwumwTSu+Q8Ro=";
     fetchSubmodules = true;
   };