diff --git a/wordcloud_demo/requirements.txt b/wordcloud_demo/requirements.txt
index 8bc10c9..94be74c 100644
--- a/wordcloud_demo/requirements.txt
+++ b/wordcloud_demo/requirements.txt
@@ -53,7 +53,7 @@ pickleshare==0.7.4
 Pillow==4.1.1
 pluggy==0.6.0
 prompt-toolkit==1.0.15
-psutil==5.4.2
+psutil==5.6.6
 py==1.5.2
 pycodestyle==2.3.1
 pyflakes==1.6.0