diff --git a/pkgs/by-name/si/simdjson/package.nix b/pkgs/by-name/si/simdjson/package.nix
index e5750b6e5cd4..574fd70bc2d0 100644
--- a/pkgs/by-name/si/simdjson/package.nix
+++ b/pkgs/by-name/si/simdjson/package.nix
@@ -7,13 +7,13 @@
 
 stdenv.mkDerivation rec {
   pname = "simdjson";
-  version = "3.12.2";
+  version = "3.12.3";
 
   src = fetchFromGitHub {
     owner = "simdjson";
     repo = "simdjson";
     rev = "v${version}";
-    sha256 = "sha256-TjUPySFwwTlD4fLpHoUywAeWvVvi7Hg1wxzgE9vohrs=";
+    sha256 = "sha256-/FfaM5BTWKrt2m70+VcUXz//RiZuzxnUOaHOjPJWsGw=";
   };
 
   nativeBuildInputs = [ cmake ];