diff --git a/pkgs/development/python-modules/moderngl_window/default.nix b/pkgs/development/python-modules/moderngl_window/default.nix
index f4e1d6a04de5..34b1b650da08 100644
--- a/pkgs/development/python-modules/moderngl_window/default.nix
+++ b/pkgs/development/python-modules/moderngl_window/default.nix
@@ -2,6 +2,7 @@
 , stdenv
 , buildPythonPackage
 , fetchFromGitHub
+, pythonRelaxDepsHook
 , setuptools
 , glfw
 , moderngl
@@ -32,7 +33,12 @@ buildPythonPackage rec {
     hash = "sha256-OfvIxezeZyuv5LLbe+4o1X2UCGnXT2DNvAF7t2Isw6Y=";
   };
 
+  pythonRelaxDeps = [
+    "pillow"
+  ];
+
   nativeBuildInputs = [
+    pythonRelaxDepsHook
     setuptools
   ];