diff --git a/pkgs/by-name/si/simdutf/package.nix b/pkgs/by-name/si/simdutf/package.nix
index 42ee43f22ae31..8e841ac44636e 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 = "5.4.15";
+  version = "5.5.0";
 
   src = fetchFromGitHub {
     owner = "simdutf";
     repo = "simdutf";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-oIrrI0Z5x1AvT9y0Ldg8zrkFJj1PZtebhJaL2UtEoB8=";
+    hash = "sha256-LEXx/b0DJZ9xxQX9+4YHjQCLFp2aXCE78Z6iPlXJjAw=";
   };
 
   # Fix build on darwin