diff --git a/requirements.txt b/requirements.txt
index e1f2a74..d678594 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ matplotlib==2.2.2
 multiprocess==0.70.6.1
 osqp==0.4.1
 pandas==0.23.4
-Pillow==5.3.0
+Pillow==9.0.1
 pyparsing==2.3.0
 python-dateutil==2.7.5
 pytz==2018.7