diff --git a/pyproject.toml b/pyproject.toml
index 5346a8c..31c9cf6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ docs = [
 	"sphinx_design",
 	"pydata-sphinx-theme",
 	"sphinx_autosummary_accessors",
-	"ipython",
+	"flit>=3.4",
 ]
 examples = [
   "jupyterlab",      # run examples in jupyter notebook