diff --git a/pyproject.toml b/pyproject.toml
index 2c1d22cfc..2bce39ea9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ dependencies = [
     "ruamel.yaml == 0.18.6",  # Oct 4, 2023, main config file interface
     "sortedcontainers == 2.4.0",  # Oct 4 2023, used by platform batch light system
     "terminaltables == 3.1.10",  # Oct 4 2023, used for the service CLI
-    "Pillow == 9.5.0"  # Nov 4 2023. Asciimatics needs Pillow > 2.7, but latest 10.x breaks kivy for now (fix due in 2.3), so we pin to latest working Pillow for now.
+    "Pillow == 10.4.0"  # Nov 4 2023. Asciimatics needs Pillow > 2.7, but latest 10.x breaks kivy for now (fix due in 2.3), so we pin to latest working Pillow for now.
     ]
 dynamic = ["version"]