diff --git a/actionweaver/llms/openai/tools/chat.py b/actionweaver/llms/openai/tools/chat.py
index 9144138..9bc81d8 100644
--- a/actionweaver/llms/openai/tools/chat.py
+++ b/actionweaver/llms/openai/tools/chat.py
@@ -114,7 +114,7 @@ def _invoke_tool(
                 Tools.from_expr(
                     expr,
                 ),
-                (stop, *called_tools[name]),
+                (stop, called_tools[name]),
             )
         else:
             # if multiple type of functions are invoked, use the same set of tools next api call
diff --git a/pyproject.toml b/pyproject.toml
index f1c03d6..586c354 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "actionweaver"
-version = "0.0.20"
+version = "0.0.21"
 description = "An Application Framework for Building LLM Agents"
 authors = ['Teng "Niel" Hu <hu.niel92@gmail.com>']
 readme = "README.md"