diff --git a/pkgs/development/python-modules/tyro/default.nix b/pkgs/development/python-modules/tyro/default.nix
index 6422a960ccd1..b59a5d1edf65 100644
--- a/pkgs/development/python-modules/tyro/default.nix
+++ b/pkgs/development/python-modules/tyro/default.nix
@@ -18,6 +18,7 @@
   flax,
   jax,
   ml-collections,
+  msgspec,
   omegaconf,
   pydantic,
   pytestCheckHook,
@@ -26,14 +27,14 @@
 
 buildPythonPackage rec {
   pname = "tyro";
-  version = "0.9.27";
+  version = "0.9.28";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "brentyi";
     repo = "tyro";
     tag = "v${version}";
-    hash = "sha256-2duLVdBwNpGWCV+WgtzyXjoVhukVjUUhIWXVBEk4QIA=";
+    hash = "sha256-dxciOLNxOjTTIm7P1XTRMgW1a6Sdbnfnqc0EEfyq7IM=";
   };
 
   build-system = [ hatchling ];
@@ -51,6 +52,7 @@ buildPythonPackage rec {
     flax
     jax
     ml-collections
+    msgspec
     omegaconf
     pydantic
     pytestCheckHook
diff --git a/pkgs/development/python-modules/unsloth-zoo/default.nix b/pkgs/development/python-modules/unsloth-zoo/default.nix
index d5f50d0578ec..605f7eae4d8d 100644
--- a/pkgs/development/python-modules/unsloth-zoo/default.nix
+++ b/pkgs/development/python-modules/unsloth-zoo/default.nix
@@ -27,20 +27,21 @@
 
 buildPythonPackage rec {
   pname = "unsloth-zoo";
-  version = "2025.8.1";
+  version = "2025.8.8";
   pyproject = true;
 
   # no tags on GitHub
   src = fetchPypi {
     pname = "unsloth_zoo";
     inherit version;
-    hash = "sha256-AkAfd+dJb8A9cUYK/VH30Q5xN2BW/x4zyndnIyN9y14=";
+    hash = "sha256-Njezsl9+oxAyiRF87AXQJbLjNz/lco0j8JG8RnTiZAE=";
   };
 
   # pyproject.toml requires an obsolete version of protobuf,
   # but it is not used.
   # Upstream issue: https://github.com/unslothai/unsloth-zoo/pull/68
   pythonRelaxDeps = [
+    "datasets"
     "protobuf"
     "transformers"
     "torch"
diff --git a/pkgs/development/python-modules/unsloth-zoo/dont-require-unsloth.patch b/pkgs/development/python-modules/unsloth-zoo/dont-require-unsloth.patch
index 4d4bdb13a05c..f1f2990d318f 100644
--- a/pkgs/development/python-modules/unsloth-zoo/dont-require-unsloth.patch
+++ b/pkgs/development/python-modules/unsloth-zoo/dont-require-unsloth.patch
@@ -1,9 +1,9 @@
 diff --git a/unsloth_zoo/__init__.py b/unsloth_zoo/__init__.py
-index a629854..06014b1 100644
+index 2332907..2eed5e9 100644
 --- a/unsloth_zoo/__init__.py
 +++ b/unsloth_zoo/__init__.py
-@@ -17,8 +17,6 @@
- __version__ = "2025.5.11"
+@@ -64,8 +64,6 @@ pass
+ 
  
  from importlib.util import find_spec
 -if find_spec("unsloth") is None:
@@ -11,7 +11,7 @@ index a629854..06014b1 100644
  pass
  del find_spec
  
-@@ -28,13 +26,14 @@ def get_device_type():
+@@ -75,12 +73,13 @@ def get_device_type():
          return "cuda"
      elif hasattr(torch, "xpu") and torch.xpu.is_available():
          return "xpu"
@@ -22,7 +22,6 @@ index a629854..06014b1 100644
  pass
  DEVICE_TYPE : str = get_device_type()
  
- import os
 -if not ("UNSLOTH_IS_PRESENT" in os.environ):
 -    raise ImportError("Please install Unsloth via `pip install unsloth`!")
  pass