diff --git a/requirements.txt b/requirements.txt
index 3a493be..ed2a790 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ kiwisolver==1.0.1
 MarkupSafe==1.0
 matplotlib==2.2.2
 numpy==1.14.0
-Pillow==5.0.0
+Pillow==9.3.0
 pyparsing==2.2.0
 python-dateutil==2.7.2
 pytz==2017.3