diff --git a/requirements-dev.txt b/requirements-dev.txt
index a41350f..3f99a56 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,6 @@
 Jinja2==2.7.2
 MarkupSafe==0.19
-Pygments==1.6
+Pygments==2.7.4
 Sphinx==1.2.2
 coverage==3.7.1
 docutils==0.11