diff --git a/tutorials/ardu-pi-serial-part-1/requirements.txt b/tutorials/ardu-pi-serial-part-1/requirements.txt
index 4b62cf1a21..fe730447dd 100644
--- a/tutorials/ardu-pi-serial-part-1/requirements.txt
+++ b/tutorials/ardu-pi-serial-part-1/requirements.txt
@@ -6,3 +6,4 @@ paho-mqtt==1.3.1
 sense-hat==2.2.0
 RTIMULib==7.2.1b1
 pyserial==3.4
+pillow>=9.0.0 # not directly required, pinned by Snyk to avoid a vulnerability