diff --git a/manimlib/mobject/mobject.py b/manimlib/mobject/mobject.py
index f74d1475..720d6971 100644
--- a/manimlib/mobject/mobject.py
+++ b/manimlib/mobject/mobject.py
@@ -534,7 +534,8 @@ class Mobject(object):
 
     # Copying and serialization
 
-    def stash_mobject_pointers(func):
+    @staticmethod
+    def stash_mobject_pointers(func: Callable):
         @wraps(func)
         def wrapper(self, *args, **kwargs):
             uncopied_attrs = ["parents", "target", "saved_state"]
diff --git a/manimlib/mobject/types/vectorized_mobject.py b/manimlib/mobject/types/vectorized_mobject.py
index 8f29cf1e..2629552c 100644
--- a/manimlib/mobject/types/vectorized_mobject.py
+++ b/manimlib/mobject/types/vectorized_mobject.py
@@ -1004,7 +1004,8 @@ class VMobject(Mobject):
         self.needs_new_triangulation = False
         return tri_indices
 
-    def triggers_refreshed_triangulation(func):
+    @staticmethod
+    def triggers_refreshed_triangulation(func: Callable):
         @wraps(func)
         def wrapper(self, *args, **kwargs):
             old_points = self.get_points().copy()