diff --git a/requirements.txt b/requirements.txt
index 6a5f8a3..dd24215 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ graphviz==0.16
 jupyterlab==3.0.16
 keras==2.4.3
 pandas==1.1.5 # pandas 1.2.1 does not support python 3.6
-pillow==8.2.0
+pillow==8.3.2
 plotly==4.14.3
 pydicom==2.1.2
 pydot==1.4.2