diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 8348d90..6882d26
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,4 @@ scipy==0.19.0
 plumbum==1.6.2
 numpy==1.12.1
 ipython==6.1.0
-Pillow==4.2.1
+Pillow==8.1.1