diff --git a/pkgs/development/python-modules/unsloth-zoo/default.nix b/pkgs/development/python-modules/unsloth-zoo/default.nix
index 163361671cae..16dc99b9c96a 100644
--- a/pkgs/development/python-modules/unsloth-zoo/default.nix
+++ b/pkgs/development/python-modules/unsloth-zoo/default.nix
@@ -13,6 +13,7 @@
   datasets,
   hf-transfer,
   huggingface-hub,
+  msgspec,
   packaging,
   peft,
   psutil,
@@ -26,14 +27,14 @@
 
 buildPythonPackage rec {
   pname = "unsloth-zoo";
-  version = "2025.4.1";
+  version = "2025.5.11";
   pyproject = true;
 
   # no tags on GitHub
   src = fetchPypi {
     pname = "unsloth_zoo";
     inherit version;
-    hash = "sha256-mRs/NMCNJWT52S7mtbQI332IQR6+/IaL29XmtMOz3fE=";
+    hash = "sha256-QRKcFkNlr7pICEy3il+za6hDYjvsSxHIBM6VaB1c5mk=";
   };
 
   # pyproject.toml requires an obsolete version of protobuf,
@@ -41,6 +42,7 @@ buildPythonPackage rec {
   # Upstream issue: https://github.com/unslothai/unsloth-zoo/pull/68
   pythonRelaxDeps = [
     "protobuf"
+    "transformers"
   ];
 
   patches = [
@@ -59,6 +61,7 @@ buildPythonPackage rec {
     datasets
     hf-transfer
     huggingface-hub
+    msgspec
     packaging
     peft
     psutil
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 6c06b8537115..4d4bdb13a05c 100644
--- a/pkgs/development/python-modules/unsloth-zoo/dont-require-unsloth.patch
+++ b/pkgs/development/python-modules/unsloth-zoo/dont-require-unsloth.patch
@@ -1,8 +1,9 @@
 diff --git a/unsloth_zoo/__init__.py b/unsloth_zoo/__init__.py
+index a629854..06014b1 100644
 --- a/unsloth_zoo/__init__.py
 +++ b/unsloth_zoo/__init__.py
-@@ -17,14 +17,10 @@
- __version__ = "2025.3.17"
+@@ -17,8 +17,6 @@
+ __version__ = "2025.5.11"
  
  from importlib.util import find_spec
 -if find_spec("unsloth") is None:
@@ -10,6 +11,17 @@ diff --git a/unsloth_zoo/__init__.py b/unsloth_zoo/__init__.py
  pass
  del find_spec
  
+@@ -28,13 +26,14 @@ def get_device_type():
+         return "cuda"
+     elif hasattr(torch, "xpu") and torch.xpu.is_available():
+         return "xpu"
++    else:
++        # Allow import during tests
++        return None
+     raise NotImplementedError("Unsloth currently only works on NVIDIA GPUs and Intel GPUs.")
+ 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`!")