diff --git a/pkgs/development/python-modules/simple-parsing/default.nix b/pkgs/development/python-modules/simple-parsing/default.nix
index ed6f60301656..115473b31b5c 100644
--- a/pkgs/development/python-modules/simple-parsing/default.nix
+++ b/pkgs/development/python-modules/simple-parsing/default.nix
@@ -20,7 +20,6 @@
   # tests
   matplotlib,
   numpy,
-  orion,
   pytest-benchmark,
   pytest-regressions,
   pytestCheckHook,
@@ -61,7 +60,6 @@ buildPythonPackage (finalAttrs: {
   nativeCheckInputs = [
     matplotlib
     numpy
-    orion
     pytest-benchmark
     pytest-regressions
     pytestCheckHook