diff --git a/requirements.txt b/requirements.txt
index e1715c2..7a8e8fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ Markdown==3.1.1
 matplotlib==3.1.1
 nltk==3.4.4
 numpy==1.15.0
-Pillow==6.1.0
+Pillow==9.0.1
 pkg-resources==0.0.0
 protobuf==3.9.0
 pyparsing==2.4.2