diff --git a/docs/rtd-requirements.txt b/docs/rtd-requirements.txt
index 4077512..2ffa258 100644
--- a/docs/rtd-requirements.txt
+++ b/docs/rtd-requirements.txt
@@ -19,5 +19,5 @@ sphinx
 sphinx_rtd_theme
 sphinx-autodoc-typehints
 jupyter_sphinx
-geopandas
+geopandas<1
 ipykernel