diff --git a/requirements.txt b/requirements.txt
index 0c3e732..8fdf4b9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@ jupyter-book>=0.13.0 # sphinx-design instead of sphinx-panel
 jupytext
 numpy
 dask>=2023.2.0
+dask-expr
 eurec4a[data]
 pydap
 ipyleaflet