diff --git a/pyproject.toml b/pyproject.toml
index 39f8bdee..cf69e52b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ dependencies = [
     "pulp>=2.8.0",
     "pyyaml>=6.0.1",
     "tables>=3.9.1",
-    "ndindex>=1.9"
+    "ndindex>=1.9",
     "skforecast>=0.9.0",
     "flask>=3.1.0",
     "waitress>=3.0.2",