diff --git a/docs/requirements.txt b/docs/requirements.txt
index 59728407..f7ee1700 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-Pygments==2.9.0
+Pygments==2.13.0
 sphinx==1.8.5
 git+https://github.com/fabpot/sphinx-php.git@v2.0.2#egg_name=sphinx-php
 sphinx_rtd_theme==0.5.2