diff --git a/pyproject.toml b/pyproject.toml
index 74ba9e2..86082e2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,6 +22,7 @@ dependencies = [
     "adjusttext>=1.3.0",
     "altair>=5.5.0",
     "umap-learn>=0.5.7",
+    "stanza>=1.11.0"
 ]
 
 [build-system]