diff --git a/requirements.txt b/requirements.txt
index 5e80278..253d2fb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ matplotlib==1.3.1
 notebook==4.2.0
 numpy==1.11.0
 pickleshare==0.7.2
-Pillow==2.3.0
+Pillow==9.3.0
 pyzmq==15.2.0
 requests==2.2.1
 scipy==0.13.3