diff --git a/pandas/plotting/_matplotlib/tools.py b/pandas/plotting/_matplotlib/tools.py
index d5624aecd1215..8ee75e7fe553e 100644
--- a/pandas/plotting/_matplotlib/tools.py
+++ b/pandas/plotting/_matplotlib/tools.py
@@ -56,7 +56,7 @@ def format_date_labels(ax: Axes, rot) -> None:
     fig = ax.get_figure()
     if fig is not None:
         # should always be a Figure but can technically be None
-        maybe_adjust_figure(fig, bottom=0.2)
+        maybe_adjust_figure(fig, bottom=0.2)  # type: ignore[arg-type]
 
 
 def table(