diff --git a/requirements-docs.txt b/requirements-docs.txt
old mode 100755
new mode 100644
index 774beb54..3e1c4007
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -1,4 +1,4 @@
-Pygments==1.6
+Pygments==2.7.4
 docutils==0.12
 Sphinx==1.2.3
 sphinx-rtd-theme==0.1.6