diff --git a/frappe/utils/data.py b/frappe/utils/data.py
index c284097200..a6273898ec 100644
--- a/frappe/utils/data.py
+++ b/frappe/utils/data.py
@@ -2489,6 +2489,7 @@ def guess_date_format(date_string: str) -> str:
 		r"%y.%m.%d",
 		r"%d %b %Y",
 		r"%d %B %Y",
+		r"%d-%b-%Y",
 	]
 
 	TIME_FORMATS = [