diff --git a/TreeViz/requirements.txt b/TreeViz/requirements.txt
index e82c1c7..8716723 100644
--- a/TreeViz/requirements.txt
+++ b/TreeViz/requirements.txt
@@ -3,7 +3,7 @@ Jinja2==2.8
 Landscape-Client==14.12
 MarkupSafe==0.23
 PAM==0.4.2
-Pillow==2.3.0
+Pillow==6.2.0
 Pygments==2.0.2
 Pyste==0.9.10
 Sphinx==1.3.1