diff --git a/requirements.txt b/requirements.txt
index b22eb80..99958af 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ PAM==0.4.2
 pandas==0.13.1
 patsy==0.2.1
 pexpect==3.1
-Pillow==2.3.0
+Pillow==9.0.1
 piston-mini-client==0.7.5
 protobuf==2.5.0
 psycopg2==2.6.1