diff --git a/pyproject.toml b/pyproject.toml
index 3fe2f50..41a6d8a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,6 +16,7 @@ dependencies = [
     "langchain-fireworks>=0.1.7",
     "python-dotenv>=1.0.1",
     "langchain-tavily>=0.1",
+    "protobuf>=6.3.1",
 ]