diff --git a/docs/requirements.txt b/docs/requirements.txt
index 757e436..9263bd4 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
 Pygments==2.15.1
 sphinx==1.8.6
 git+https://github.com/fabpot/sphinx-php.git@v2.0.2#egg_name=sphinx-php
-sphinx_rtd_theme==1.2.0
+sphinx_rtd_theme==1.2.1
 jinja2==3.0.3