diff --git a/Tutorial0_setup/requirements.txt b/Tutorial0_setup/requirements.txt
old mode 100755
new mode 100644
index bcf8941..450d151
--- a/Tutorial0_setup/requirements.txt
+++ b/Tutorial0_setup/requirements.txt
@@ -14,7 +14,7 @@ nbdime==1.0.5
 nbformat==4.4.0
 notebook==5.7.8
 numpy==1.16.2
-Pillow==6.0.0
+Pillow==8.3.2
 scipy==1.2.1
 six==1.12.0