diff --git a/src/pyhf/experimental/modifiers.py b/src/pyhf/experimental/modifiers.py
index 167a446d25..d6b510237d 100644
--- a/src/pyhf/experimental/modifiers.py
+++ b/src/pyhf/experimental/modifiers.py
@@ -153,7 +153,6 @@ def apply(self, pars):
 def add_custom_modifier(
     funcname: str, deps: list[str], newparams: dict[str, dict[str, Sequence[float]]]
 ) -> dict[str, tuple[BaseBuilder, BaseApplier]]:
-
     _builder = make_builder(funcname, deps, newparams)
     _applier = make_applier(funcname, deps, newparams)