diff --git a/requirements.txt b/requirements.txt
index f6af95b..5864dc7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ matplotlib==3.0.3
 networkx==2.3
 nltk==3.4.3
 numpy==1.16.4
-Pillow==6.2.0
+Pillow==9.0.1
 pkg-resources==0.0.0
 progressbar2==3.39.3
 protobuf==3.8.0