diff --git a/docs/requirements.txt b/docs/requirements.txt
index 417ec352..987c67e8 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -9,7 +9,7 @@ javasphinx==0.9.14
 Jinja2==2.8
 lxml==3.6.4
 MarkupSafe==0.23
-Pygments==2.1.3
+Pygments==2.7.4
 pytz==2016.7
 six==1.10.0
 snowballstemmer==1.2.1