diff --git a/docs/requirements.txt b/docs/requirements.txt
old mode 100755
new mode 100644
index c2d787a..2666789
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,7 +2,7 @@
 # crate-docs-theme>=0.7
 okchain1-docs-theme>=0.1.39
 sphinx-csv-filter
-Pygments==2.3.1
+Pygments==2.7.4
 
 
 alabaster==0.7.12