diff --git a/pyproject.toml b/pyproject.toml
index ff7f46f77..8fcd37c35 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,6 +36,7 @@ dependencies = [
     "setuptools",
     "termcolor",
     "tiktoken",
+    "tree_sitter",
     "pillow",
 ]