diff --git a/vectorization/requirements.txt b/vectorization/requirements.txt
index 51a02a6..564a7cb 100644
--- a/vectorization/requirements.txt
+++ b/vectorization/requirements.txt
@@ -16,7 +16,7 @@ numpy==1.11.1
 pathlib2==2.1.0
 pexpect==4.2.0
 pickleshare==0.7.2
-Pillow==3.3.0
+Pillow==9.0.0
 ptyprocess==0.5.1
 pyparsing==2.1.5
 python-daemon==2.1.1