diff --git a/docs/requirements.txt b/docs/requirements.txt
index 1f18b6e..f0a76a9 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -25,7 +25,7 @@ pexpect==4.7.0
 pickleshare==0.7.5
 prompt-toolkit==2.0.9
 ptyprocess==0.6.0
-Pygments==2.3.1
+Pygments==2.7.4
 pylint==2.3.1
 pyparsing==2.4.0
 python-dateutil==2.8.0