diff --git a/requirements.txt b/requirements.txt
index 9e90d54..013f438 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,7 +52,7 @@ pandocfilters==1.4.2
 patsy==0.4.1
 pexpect==4.2.1
 pickleshare==0.7.4
-Pillow==4.2.1
+Pillow==8.1.1
 ply==3.7
 progressbar2==3.34.2
 prompt-toolkit==1.0.15