diff --git a/pyproject.toml b/pyproject.toml
index 2d82b7f..4a190f6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,6 +22,7 @@ dependencies = [
   "numpy",
   "requests",
   "lsst-resources",
+  "lsst-sdm-schemas",
 ]
 
 [project.scripts]