diff --git a/docs/requirements.txt b/docs/requirements.txt
index eb5e0fd..834b1bb 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,7 +2,7 @@ breathe>=4.9.1
 colorama
 docutils==0.16
 sphinx>=3.5.1
-sphinx_rtd_theme
+sphinx_rtd_theme>=1.0.0
 sphinx-tabs
 sphinxcontrib-svg2pdfconverter
 sphinx-sitemap