diff --git a/wordcloud_demo/requirements.txt b/wordcloud_demo/requirements.txt
index 8bc10c9..479bae1 100644
--- a/wordcloud_demo/requirements.txt
+++ b/wordcloud_demo/requirements.txt
@@ -57,7 +57,7 @@ psutil==5.4.2
 py==1.5.2
 pycodestyle==2.3.1
 pyflakes==1.6.0
-Pygments==2.2.0
+Pygments==2.7.4
 pylint==1.7.1
 PyMySQL==0.7.11
 pyparsing==2.2.0