diff --git a/requirements.txt b/requirements.txt
index b7aafec..1185d55 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ Cython==0.28.5
 cytoolz==0.9.0.1
 opencv-python==3.4.0.12
 pathos==0.2.2
-Pillow==5.4.1
+Pillow==9.0.1
 scikit-image==0.14.0
 scikit-learn==0.19.2
 scipy==1.0.1