diff --git a/requirements.txt b/requirements.txt
index 4a572b8..1e7d660 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ cycler==0.10.0
 matplotlib==2.1.0
 numpy==1.13.3
 olefile==0.44
-Pillow==8.1.1
+Pillow==9.0.0
 pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.2