diff --git a/core/dbt/utils.py b/core/dbt/utils.py
index eee3b90e675..089b6627278 100644
--- a/core/dbt/utils.py
+++ b/core/dbt/utils.py
@@ -329,7 +329,7 @@ def __contains__(self, name) -> bool:
 # cli args and flags, which is more complete than just the cli args.
 # If new args are added that are false by default (particularly in the
 # global options) they should be added to the 'default_false_keys' list.
-def args_to_dict(args):
+def args_to_dict(args) -> dict:
     var_args = vars(args).copy()
     # update the args with the flags, which could also come from environment
     # variables or project_flags