diff --git a/requirements.txt b/requirements.txt
index 14784ed..506c681 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ matplotlib==3.0.2
 nbformat==4.4.0
 numpy==1.16.1
 pandas==0.24.1
-Pillow==5.4.1
+Pillow==9.0.1
 plotly==2.5.1
 pyparsing==2.3.1
 python-dateutil==2.8.0