diff --git a/wordcloud_demo/requirements.txt b/wordcloud_demo/requirements.txt
index 8bc10c9..e49e8d4 100644
--- a/wordcloud_demo/requirements.txt
+++ b/wordcloud_demo/requirements.txt
@@ -54,7 +54,7 @@ Pillow==4.1.1
 pluggy==0.6.0
 prompt-toolkit==1.0.15
 psutil==5.4.2
-py==1.5.2
+py==1.10.0
 pycodestyle==2.3.1
 pyflakes==1.6.0
 Pygments==2.2.0