diff --git a/pkgs/development/python-modules/diffusers/default.nix b/pkgs/development/python-modules/diffusers/default.nix
index ff7c61692b96..34a5b3ae63a6 100644
--- a/pkgs/development/python-modules/diffusers/default.nix
+++ b/pkgs/development/python-modules/diffusers/default.nix
@@ -45,18 +45,22 @@
 
 buildPythonPackage rec {
   pname = "diffusers";
-  version = "0.36.0";
+  version = "0.38.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "huggingface";
     repo = "diffusers";
     tag = "v${version}";
-    hash = "sha256-bDGiY1PR3JilEzkynUGE5IwDA+bgVQWW1jpGEfftI3U=";
+    hash = "sha256-FyXQJh4i/m9lAD2Sz45YWc+KIFMA+xQLb3ErudO9voY=";
   };
 
   build-system = [ setuptools ];
 
+  pythonRelaxDeps = [
+    "safetensors"
+  ];
+
   dependencies = [
     filelock
     huggingface-hub