diff --git a/pyproject.toml b/pyproject.toml
index be23fda..db474c3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,6 +36,7 @@ classifiers = [
 ]
 dependencies = [
     "numpy",
+    "pillow",
     "smbus2",
     "spidev",
     "gpiodevice>=0.0.3"