diff --git a/pkgs/development/python-modules/orbax-checkpoint/default.nix b/pkgs/development/python-modules/orbax-checkpoint/default.nix
index 9cfbc560ed43..b9cba25f3e8a 100644
--- a/pkgs/development/python-modules/orbax-checkpoint/default.nix
+++ b/pkgs/development/python-modules/orbax-checkpoint/default.nix
@@ -32,14 +32,14 @@
 
 buildPythonPackage rec {
   pname = "orbax-checkpoint";
-  version = "0.6.3";
+  version = "0.6.4";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "google";
     repo = "orbax";
     rev = "refs/tags/v${version}";
-    hash = "sha256-yqccXQGEvxYnWP8rWmRLjjB0pkSEeXBrRvJIwVowUx0=";
+    hash = "sha256-xd75/AKBFUdA6a8sQnCB2rVbHl/Foy4LTb07jnwrTjA=";
   };
 
   sourceRoot = "${src.name}/checkpoint";