diff --git a/libs/langgraph/langgraph/pregel/loop.py b/libs/langgraph/langgraph/pregel/loop.py
index 362756f32..83ce36379 100644
--- a/libs/langgraph/langgraph/pregel/loop.py
+++ b/libs/langgraph/langgraph/pregel/loop.py
@@ -740,6 +740,7 @@ class SyncPregelLoop(PregelLoop, ContextManager):
                 **saved.config.get(CONF, {}),
             },
         }
+        self.prev_checkpoint_config = saved.parent_config
         self.checkpoint = saved.checkpoint
         self.checkpoint_metadata = saved.metadata
         self.checkpoint_pending_writes = (
@@ -867,6 +868,7 @@ class AsyncPregelLoop(PregelLoop, AsyncContextManager):
                 **saved.config.get(CONF, {}),
             },
         }
+        self.prev_checkpoint_config = saved.parent_config
         self.checkpoint = saved.checkpoint
         self.checkpoint_metadata = saved.metadata
         self.checkpoint_pending_writes = (