diff --git a/libs/langgraph/langgraph/pregel/algo.py b/libs/langgraph/langgraph/pregel/algo.py
index 5be5e2311..c2d17d604 100644
--- a/libs/langgraph/langgraph/pregel/algo.py
+++ b/libs/langgraph/langgraph/pregel/algo.py
@@ -1,6 +1,5 @@
 import sys
 from collections import defaultdict, deque
-from contextvars import Context
 from functools import partial
 from hashlib import sha1
 from typing import (
@@ -122,7 +121,7 @@ class Call:
         input: Any,
         *,
         retry: Optional[RetryPolicy],
-        callbacks: Optional[Context],
+        callbacks: Optional[Callbacks],
     ) -> None:
         self.func = func
         self.input = input
diff --git a/libs/langgraph/langgraph/pregel/executor.py b/libs/langgraph/langgraph/pregel/executor.py
index 7e64a244a..80ce20e7c 100644
--- a/libs/langgraph/langgraph/pregel/executor.py
+++ b/libs/langgraph/langgraph/pregel/executor.py
@@ -65,7 +65,10 @@ class BackgroundExecutor(ContextManager):
     ) -> concurrent.futures.Future[T]:
         ctx = copy_context()
         if __next_tick__:
-            task = self.executor.submit(next_tick, ctx.run, fn, *args, **kwargs)
+            task = cast(
+                concurrent.futures.Future[T],
+                self.executor.submit(next_tick, ctx.run, fn, *args, **kwargs),  # type: ignore[arg-type]
+            )
         else:
             task = self.executor.submit(ctx.run, fn, *args, **kwargs)
         self.tasks[task] = (__cancel_on_exit__, __reraise_on_exit__)
diff --git a/libs/langgraph/langgraph/types.py b/libs/langgraph/langgraph/types.py
index aa328bbb8..c0bd066ca 100644
--- a/libs/langgraph/langgraph/types.py
+++ b/libs/langgraph/langgraph/types.py
@@ -443,7 +443,6 @@ def interrupt(value: Any) -> Any:
         GraphInterrupt: On the first invocation within the node, halts execution and surfaces the provided value to the client.
     """
     from langgraph.constants import (
-        CONF,
         CONFIG_KEY_CHECKPOINT_NS,
         CONFIG_KEY_SCRATCHPAD,
         CONFIG_KEY_SEND,
@@ -456,7 +455,7 @@ def interrupt(value: Any) -> Any:
     from langgraph.errors import GraphInterrupt
     from langgraph.utils.config import get_config
 
-    conf = get_config()[CONF]
+    conf = get_config()["configurable"]
     # track interrupt index
     scratchpad: PregelScratchpad = conf[CONFIG_KEY_SCRATCHPAD]
     if "interrupt_counter" not in scratchpad: