diff --git a/pkgs/by-name/si/simdutf/package.nix b/pkgs/by-name/si/simdutf/package.nix
index e64b70155a8e..42ee43f22ae3 100644
--- a/pkgs/by-name/si/simdutf/package.nix
+++ b/pkgs/by-name/si/simdutf/package.nix
@@ -7,13 +7,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "simdutf";
-  version = "5.3.7";
+  version = "5.4.15";
 
   src = fetchFromGitHub {
     owner = "simdutf";
     repo = "simdutf";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-n99lt0OYK6OyLArdgPRabQ80ohQgHklpt9saDzKhvJw=";
+    hash = "sha256-oIrrI0Z5x1AvT9y0Ldg8zrkFJj1PZtebhJaL2UtEoB8=";
   };
 
   # Fix build on darwin