diff --git a/docs/requirements.txt b/docs/requirements.txt
index 53888308..51e21906 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -18,3 +18,4 @@ hciplot>=0.2.1
 typing
 dataclass_builder
 urllib3 < 2.0
+sphinx-rtd-theme