diff --git a/bigquery_etl/schema/__init__.py b/bigquery_etl/schema/__init__.py
index b1bcea6b6b..44ed0e1bae 100644
--- a/bigquery_etl/schema/__init__.py
+++ b/bigquery_etl/schema/__init__.py
@@ -270,7 +270,7 @@ class Schema:
     def to_yaml_file(self, yaml_path: Path):
         """Write schema to the YAML file path."""
         with open(yaml_path, "w") as out:
-            yaml.dump(self.schema, out, default_flow_style=False)
+            yaml.dump(self.schema, out, default_flow_style=False, sort_keys=False)
 
     def to_json_file(self, json_path: Path):
         """Write schema to the JSON file path."""