diff --git a/requirements.txt b/requirements.txt
index 9ae6c4d..669413b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ matplotlib==2.2.2
 networkx==2.1
 numpy==1.15.0
 pandas==0.23.4
-Pillow==5.2.0
+Pillow==9.0.1
 pycparser==2.18
 pygit==0.1
 pyparsing==2.2.0