diff --git a/pkgs/development/python-modules/optax/default.nix b/pkgs/development/python-modules/optax/default.nix
index 38868516759f..cd30ec18152b 100644
--- a/pkgs/development/python-modules/optax/default.nix
+++ b/pkgs/development/python-modules/optax/default.nix
@@ -11,7 +11,7 @@
 
 buildPythonPackage rec {
   pname = "optax";
-  version = "0.1.4";
+  version = "0.1.5";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     owner = "deepmind";
     repo = pname;
     rev = "refs/tags/v${version}";
-    hash = "sha256-BvmRFA1KNS7F6kozH9LMG8v4XJY/T2DwKgf9IIY2shE=";
+    hash = "sha256-vhPpynKq0dboSt+fQ4lvVv9ytDXnZKRrc7lF03Mm39g=";
   };
 
   outputs = [