diff --git a/sphinx/util/docutils.py b/sphinx/util/docutils.py
index b603923b748..b4795a0394f 100644
--- a/sphinx/util/docutils.py
+++ b/sphinx/util/docutils.py
@@ -217,15 +217,15 @@ def depart_footnote(self, node):
     # Only apply on Docutils 0.18 or 0.18.1, as 0.17 and earlier used a <dl> based
     # approach, and 0.19 and later use the fixed approach by default.
     if docutils.__version_info__[:2] == (0, 18):
-        HTMLTranslator.visit_footnote = visit_footnote  # type: ignore[assignment]
-        HTMLTranslator.depart_footnote = depart_footnote  # type: ignore[assignment]
+        HTMLTranslator.visit_footnote = visit_footnote  # type: ignore[method-assign]
+        HTMLTranslator.depart_footnote = depart_footnote  # type: ignore[method-assign]
 
     try:
         yield
     finally:
         if docutils.__version_info__[:2] == (0, 18):
-            HTMLTranslator.visit_footnote = old_visit_footnote  # type: ignore[assignment]
-            HTMLTranslator.depart_footnote = old_depart_footnote  # type: ignore[assignment]
+            HTMLTranslator.visit_footnote = old_visit_footnote  # type: ignore[method-assign]
+            HTMLTranslator.depart_footnote = old_depart_footnote  # type: ignore[method-assign]
 
 
 @contextmanager