diff --git a/data_structures/stacks/balanced_parentheses.py b/data_structures/stacks/balanced_parentheses.py
index 928815bb2111..a05627bd12dd 100644
--- a/data_structures/stacks/balanced_parentheses.py
+++ b/data_structures/stacks/balanced_parentheses.py
@@ -11,6 +11,12 @@ def balanced_parentheses(parentheses: str) -> bool:
     False
     >>> balanced_parentheses("1+2*3-4")
     True
+    >>> balanced_parentheses("{}")
+    True
+    >>> balanced_parentheses("))((")
+    False
+    >>> balanced_parentheses("((")
+    False
     >>> balanced_parentheses("")
     True
     """