diff --git a/pyproject.toml b/pyproject.toml
index 070253c..43c1dc9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,6 +17,7 @@ classifiers = [
 dynamic = ["version"]
 
 dependencies = [
+    "lephare",
     "pz-rail-base",
     "qp-prob[full]",
 ]