diff --git a/pkgs/development/python-modules/unsloth-zoo/default.nix b/pkgs/development/python-modules/unsloth-zoo/default.nix
index 605f7eae4d8d..98cd71469681 100644
--- a/pkgs/development/python-modules/unsloth-zoo/default.nix
+++ b/pkgs/development/python-modules/unsloth-zoo/default.nix
@@ -27,14 +27,14 @@
 
 buildPythonPackage rec {
   pname = "unsloth-zoo";
-  version = "2025.8.8";
+  version = "2025.9.5";
   pyproject = true;
 
   # no tags on GitHub
   src = fetchPypi {
     pname = "unsloth_zoo";
     inherit version;
-    hash = "sha256-Njezsl9+oxAyiRF87AXQJbLjNz/lco0j8JG8RnTiZAE=";
+    hash = "sha256-wlKlXTgEdfkz4j//LHw23CmeL7toINg5IUxcpwrPtAw=";
   };
 
   # pyproject.toml requires an obsolete version of protobuf,
diff --git a/pkgs/development/python-modules/unsloth/default.nix b/pkgs/development/python-modules/unsloth/default.nix
index 73f94721b5e0..dcb2ba5daf82 100644
--- a/pkgs/development/python-modules/unsloth/default.nix
+++ b/pkgs/development/python-modules/unsloth/default.nix
@@ -31,14 +31,14 @@
 
 buildPythonPackage rec {
   pname = "unsloth";
-  version = "2025.8.9";
+  version = "2025.9.4";
   pyproject = true;
 
   # Tags on the GitHub repo don't match
   src = fetchPypi {
     pname = "unsloth";
     inherit version;
-    hash = "sha256-XKYKEJCiOucuGfout8+FiTfO3KXvkucaduwWnZR5OwA=";
+    hash = "sha256-aT/RS48hBMZT1ab1Rx1lpSMi6yyEzJCASzDAP0d6ixA=";
   };
 
   build-system = [