diff --git a/requirements.txt b/requirements.txt
index 211a1838f..40d705514 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,6 @@ Flask-User==0.6.8
 Flask-WTF==0.12
 Jinja2==2.8
 psycopg2==2.6.1
-pillow==3.4.2
+pillow==9.0.1
 requests==2.11.1
 bcbio-gff==0.6.4