diff --git a/requirements.txt b/requirements.txt
index d4b18f5..c541987 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ matplotlib==3.3.0
 scikit_image==0.17.2
 opencv_python==4.4.0.46
 Image==1.5.33
-Pillow==8.0.1
+Pillow==9.0.1
 PyQt5==5.15.2
 PyYAML==5.3.1
 SimpleITK==2.0.1