diff --git a/backend/requirements.txt b/backend/requirements.txt
index 5073479d..001ab1f2 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -16,7 +16,7 @@ cassandra-driver==3.19.0
 SimpleITK==1.2.3
 numpy==1.16.3
 celery==4.3.1
-Pillow==6.2.0
+Pillow==9.0.1
 retrying==1.3.3
 psycopg2-binary==2.8.3
 scipy==1.3.1