diff --git a/docs/requirements.txt b/docs/requirements.txt
index 53fc1f32..1eece4bb 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,5 @@
 sphinx==7.1.2
 sphinx-rtd-theme==1.3.0rc1
+zarr
+dask
+numpy