diff --git a/deepmerge/extended_set.py b/deepmerge/extended_set.py
index 3efb399..de44a01 100644
--- a/deepmerge/extended_set.py
+++ b/deepmerge/extended_set.py
@@ -22,6 +22,9 @@ def _insert(self, element: Any) -> None:
     def _hash_element(self, element: Any) -> int:
         if getattr(element, "__hash__") is not None:
             return hash(element)
+        elif isinstance(element, dict):
+            sorted_keys = sorted(element.keys())
+            return hash(",".join([f"{key}:{element[key]}" for key in sorted_keys]))
         return hash(str(element))
 
     def __contains__(self, obj: Any) -> bool: