diff --git a/pyproject.toml b/pyproject.toml
index 1d929aaf..0e85c04d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,6 +69,7 @@ docs = [
   "myst-nb",
   "ipywidgets",
   "accessible-pygments",
+  "reproject[all]",
 ]
 
 [project.urls]