diff --git a/web/requirements.txt b/web/requirements.txt
index 2e110e5..576ec9f 100644
--- a/web/requirements.txt
+++ b/web/requirements.txt
@@ -5,7 +5,7 @@ Click==7.0
 Django==2.2.10
 openslide-python==1.1.1
 pathspec==0.6.0
-Pillow==6.2.1
+Pillow==9.3.0
 psycopg2-binary==2.8.4
 pytz==2019.3
 regex==2019.11.1