diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index d43e2fe..c7b0741
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 openslide-python==1.1.1
 h5py==2.9.0
-Pillow==5.4.1
+Pillow==9.0.1
 tensorboard==2.0.0
 tensorflow==2.0.0
 scikit-image==0.14.2