diff --git a/requirements.txt b/requirements.txt
index dd2a67c..9920362 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -84,7 +84,7 @@ patsy==0.4.1
 pep8==1.7.0
 pexpect==4.2.1
 pickleshare==0.7.4
-Pillow==4.2.1
+Pillow==8.1.1
 pipenv==2018.7.1
 pkginfo==1.4.1
 plotly==2.5.1