diff --git a/plot_serializer/matplotlib/axesproxy.py b/plot_serializer/matplotlib/axesproxy.py
index 8368692ab711fc39326f2ddd0e15215f110cbbb0..6086efd4b528a26ddb04f85e1214c63d8d55bb9d 100644
--- a/plot_serializer/matplotlib/axesproxy.py
+++ b/plot_serializer/matplotlib/axesproxy.py
@@ -96,7 +96,7 @@ PLOTTING_METHODS = [
 ]
 
 
-def inherit_and_extend_doc(base_class, method_name, additional_doc):  # type: ignore
+def inherit_and_extend_doc(base_class: Any, method_name: Any, additional_doc: Any) -> Any:
     def decorator(func):
         func.__doc__ = getattr(base_class, method_name).__doc__ + additional_doc
         return func