diff --git a/pkgs/development/python-modules/blosc2/default.nix b/pkgs/development/python-modules/blosc2/default.nix
index 96acacf62d25..8e835b2e1a37 100644
--- a/pkgs/development/python-modules/blosc2/default.nix
+++ b/pkgs/development/python-modules/blosc2/default.nix
@@ -3,6 +3,7 @@
   stdenv,
   buildPythonPackage,
   fetchFromGitHub,
+  pythonAtLeast,
 
   # build-system
   cmake,
@@ -32,14 +33,14 @@
 
 buildPythonPackage rec {
   pname = "blosc2";
-  version = "3.11.1";
+  version = "3.12.2";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "Blosc";
     repo = "python-blosc2";
     tag = "v${version}";
-    hash = "sha256-n+DSBzb3XXzMEqx8ApFLymU1/IPZTcEFgRarvmYkZVY=";
+    hash = "sha256-t2tf8s2WwG4vEQbh8HACMtUjVrwmGby1yKd+IlL39PY=";
   };
 
   nativeBuildInputs = [
@@ -78,6 +79,10 @@ buildPythonPackage rec {
   disabledTests = [
     # attempts external network requests
     "test_with_remote"
+  ]
+  ++ lib.optionals (pythonAtLeast "3.14") [
+    # https://github.com/Blosc/python-blosc2/issues/551
+    "test_expand_dims"
   ];
 
   passthru.c-blosc2 = c-blosc2;