diff --git a/requirements.txt b/requirements.txt
index 3599282..49e48f0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ nltk
 numpy
 matplotlib>=3.0.3
 scipy==1.4.1
-pillow==6.2.0
+pillow==8.1.1
 chumpy
 boto3
 requests