diff --git a/requirements.txt b/requirements.txt
index 683cbb3..2daa957 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ gunicorn==19.8.1
 icalendar==4.0.2
 idna==2.9
 jmespath==0.9.3
-Pillow==5.1.0
+Pillow==9.0.0
 psycopg2==2.7.5
 pycodestyle==2.4.0
 python-dateutil==2.7.3