diff --git a/upper-constraints.txt b/upper-constraints.txt
index 9ee7a2bb66..ce0a5249d3 100644
--- a/upper-constraints.txt
+++ b/upper-constraints.txt
@@ -324,7 +324,7 @@ pydotplus===2.0.2
 boto3===1.34.23
 jeepney===0.8.0
 stestr===4.1.0
-pillow===10.2.0
+pillow===9.5.0
 pysmi-lextudio===1.1.13
 oslo.serialization===5.3.0
 warlock===2.0.1