diff --git a/nwb_linkml/pyproject.toml b/nwb_linkml/pyproject.toml
index 7e15f47..005c020 100644
--- a/nwb_linkml/pyproject.toml
+++ b/nwb_linkml/pyproject.toml
@@ -14,7 +14,7 @@ packages = [
 python = "^3.11"
 pyyaml = "^6.0"
 linkml-runtime = "^1.5.6"
-nwb_schema_language = { path = '../nwb_schema_language', develop = true, optional = true }
+nwb_schema_language = { path = '../nwb_schema_language' }
 rich = "^13.5.2"
 linkml = "^1.5.7"
 nptyping = "^2.5.0"