diff --git a/recce/adapter/dbt_adapter/__init__.py b/recce/adapter/dbt_adapter/__init__.py
index 2fa1df84..1ac495b8 100644
--- a/recce/adapter/dbt_adapter/__init__.py
+++ b/recce/adapter/dbt_adapter/__init__.py
@@ -621,12 +621,15 @@ def execute(
 
     def build_parent_map(self, nodes: Dict, base: Optional[bool] = False) -> Dict[str, List[str]]:
         manifest = self.curr_manifest if base is False else self.base_manifest
-        manifest_dict = manifest.to_dict()
+        
+        try:
+            parent_map_source = manifest.parent_map
+        except AttributeError:
+            parent_map_source = manifest.to_dict()["parent_map"]
 
-        node_ids = nodes.keys()
         parent_map = {}
-        for k, parents in manifest_dict["parent_map"].items():
-            if k not in node_ids:
+        for k, parents in parent_map_source.items():
+            if k not in nodes:
                 continue
             parent_map[k] = [parent for parent in parents if parent in node_ids]