diff --git a/frappe/utils/safe_exec.py b/frappe/utils/safe_exec.py
index a99899546a..4a77b46299 100644
--- a/frappe/utils/safe_exec.py
+++ b/frappe/utils/safe_exec.py
@@ -48,7 +48,6 @@ SERVER_SCRIPT_FILE_PREFIX = "<serverscript>"
 class NamespaceDict(frappe._dict):
 	"""Raise AttributeError if function not found in namespace"""
 
-	__slots__ = ()
 	__getattribute__ = dict.__getattribute__
 
 	def __getattr__(self, key):