diff --git a/constraints.txt b/constraints.txt
index ee5e1297f..623a9cc4f 100644
--- a/constraints.txt
+++ b/constraints.txt
@@ -1,4 +1,4 @@
 decorator==4.4.2
 importlib-metadata==4.13.0;python_version<'3.8'
-pillow<10.0.0
+pillow<10.0.0;python_version<'3.13'
 lxml==5.1.1