diff --git a/lambda/check-view-security-option/check-view-option/main.py b/lambda/check-view-security-option/check-view-option/main.py
index 252fc262..c75862a0 100644
--- a/lambda/check-view-security-option/check-view-option/main.py
+++ b/lambda/check-view-security-option/check-view-option/main.py
@@ -185,6 +185,7 @@ def fetch_view_security_options(connection: Database, check_target_schemas: list
     try:
         with connection.query(select_view_security_option_sql) as cursor:
             result = cursor.fetchall()
+        connection.close()
         return result
     except Exception as e:
         raise QueryExecutionException('E-04-01', f'Viewセキュリティオプションチェックに失敗しました　エラー内容：{e}')