diff --git a/pkgs/development/python-modules/blosc2/default.nix b/pkgs/development/python-modules/blosc2/default.nix
index 84623a2686e7..bfe35aeab32d 100644
--- a/pkgs/development/python-modules/blosc2/default.nix
+++ b/pkgs/development/python-modules/blosc2/default.nix
@@ -32,14 +32,14 @@
 
 buildPythonPackage rec {
   pname = "blosc2";
-  version = "3.3.4";
+  version = "3.4.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "Blosc";
     repo = "python-blosc2";
     tag = "v${version}";
-    hash = "sha256-7R08SZxj0nqEonGB/iL5Zoy0yk3rhENIv0hdUjF9KqA=";
+    hash = "sha256-dCTASj3jNY4tQdllis9F95yNRD/KwctBxiS4MjkxeX0=";
   };
 
   nativeBuildInputs = [