diff --git a/docs/requirements.txt b/docs/requirements.txt
index 944a485..aac836f 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,4 +2,4 @@ mkdocs==1.1.2
 mkdocs-material==6.1.4
 mkdocs-material-extensions==1.0.1
 mkdocstrings==0.13.6
-pygments==2.7.2
+pygments==2.7.4