diff --git a/libs/kotaemon/pyproject.toml b/libs/kotaemon/pyproject.toml
index 246f1ca..59e5ee5 100644
--- a/libs/kotaemon/pyproject.toml
+++ b/libs/kotaemon/pyproject.toml
@@ -51,6 +51,7 @@ dependencies = [
     "plotly<6.0.0",
     "PyMuPDF>=1.23,<=1.24.11",
     "pypdf>=4.2.0,<4.3",
+    "pylance",
     "python-decouple", # for theflow
     "python-docx>=1.1.0,<1.2",
     "python-dotenv>=1.0.1,<1.1",