diff --git a/requirements.txt b/requirements.txt
index 8d73062..fbe833f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -122,7 +122,7 @@ pathlib2==2.3.2
 patsy==0.5.0
 pep8==1.7.1
 pickleshare==0.7.4
-Pillow==5.1.0
+Pillow==9.0.0
 pkginfo==1.4.2
 plotly==3.4.2
 pluggy==0.6.0