diff --git a/docs/requirements.txt b/docs/requirements.txt
index 9ace9643a351d88777e13215c5a46dd62d80d742..4a5640c98dcab27b7b59e2010328e4c7d70bf977 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,3 @@
 docutils==0.20.1
 myst-parser==2.0.0
+sphinx-rtd-theme==0.2.4