diff --git a/langgraph/store/redis/__init__.py b/langgraph/store/redis/__init__.py
index a41bbbd..79d3cb1 100644
--- a/langgraph/store/redis/__init__.py
+++ b/langgraph/store/redis/__init__.py
@@ -5,10 +5,10 @@
 import asyncio
 import json
 import math
-import uuid
 from contextlib import contextmanager
 from datetime import datetime, timezone
 from typing import Any, Iterable, Iterator, Optional, Sequence, cast
+from ulid import ULID
 
 from langgraph.store.base import (
     BaseStore,
@@ -223,7 +223,7 @@ def _batch_put_ops(
         # Generate IDs for PUT operations
         for _, op in put_ops:
             if op.value is not None:
-                generated_doc_id = uuid.uuid4().hex
+                generated_doc_id = str(ULID())
                 namespace = _namespace_to_text(op.namespace)
                 doc_ids[(namespace, op.key)] = generated_doc_id
 
diff --git a/langgraph/store/redis/aio.py b/langgraph/store/redis/aio.py
index bcaacdb..8625122 100644
--- a/langgraph/store/redis/aio.py
+++ b/langgraph/store/redis/aio.py
@@ -2,12 +2,12 @@
 
 import asyncio
 import json
-import uuid
 import weakref
 from contextlib import asynccontextmanager
 from datetime import datetime, timezone
 from types import TracebackType
 from typing import Any, AsyncIterator, Iterable, Optional, Sequence, cast
+from ulid import ULID
 
 from langgraph.store.base import (
     BaseStore,
@@ -398,7 +398,7 @@ async def _batch_put_ops(
         # Generate IDs for PUT operations
         for _, op in put_ops:
             if op.value is not None:
-                generated_doc_id = uuid.uuid4().hex
+                generated_doc_id = str(ULID())
                 namespace = _namespace_to_text(op.namespace)
                 doc_ids[(namespace, op.key)] = generated_doc_id
 
diff --git a/poetry.lock b/poetry.lock
index afb21c4..266b053 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1508,6 +1508,20 @@ files = [
 [package.extras]
 cli = ["click (>=5.0)"]
 
+[[package]]
+name = "python-ulid"
+version = "3.0.0"
+description = "Universally unique lexicographically sortable identifier"
+optional = false
+python-versions = ">=3.9"
+files = [
+    {file = "python_ulid-3.0.0-py3-none-any.whl", hash = "sha256:e4c4942ff50dbd79167ad01ac725ec58f924b4018025ce22c858bfcff99a5e31"},
+    {file = "python_ulid-3.0.0.tar.gz", hash = "sha256:e50296a47dc8209d28629a22fc81ca26c00982c78934bd7766377ba37ea49a9f"},
+]
+
+[package.extras]
+pydantic = ["pydantic (>=2.0)"]
+
 [[package]]
 name = "pywin32"
 version = "308"
@@ -2271,4 +2285,4 @@ cffi = ["cffi (>=1.11)"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.9,<3.13"
-content-hash = "065903b047fb88be4267859ff3e6a979da0c52e424237048ed004ca717c1cf5a"
+content-hash = "4752616bd33f211c275fd830ceb231466ae138aff257a45136815a9d603919ce"
diff --git a/pyproject.toml b/pyproject.toml
index d4ee3ca..8c5eab1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,6 +21,7 @@ python = ">=3.9,<3.13"
 langgraph-checkpoint = "^2.0.10"
 redisvl = "^0.3.9"
 redis = "^5.2.1"
+python-ulid = "^3.0.0"
 langgraph = "^0.2.70"
 
 [tool.poetry.group.dev.dependencies]
diff --git a/tests/test_async_store.py b/tests/test_async_store.py
index 186e7d8..b1b98e6 100644
--- a/tests/test_async_store.py
+++ b/tests/test_async_store.py
@@ -1,6 +1,5 @@
 """Tests for AsyncRedisStore."""
 
-import uuid
 from typing import Any, AsyncGenerator, Dict, Sequence, cast
 
 import pytest
@@ -8,6 +7,10 @@
 from langchain_core.messages import BaseMessage, HumanMessage
 from langchain_core.runnables import RunnableConfig
 from langchain_openai import OpenAIEmbeddings
+from redis.asyncio import Redis
+from ulid import ULID
+
+from langgraph.checkpoint.redis import AsyncRedisSaver
 from langgraph.constants import START
 from langgraph.graph import MessagesState, StateGraph
 from langgraph.store.base import (
@@ -286,6 +289,7 @@ async def test_list_namespaces(store: AsyncRedisStore) -> None:
     for namespace in test_namespaces:
         await store.adelete(namespace, "dummy")
 
+
 # TODO
 @pytest.mark.skip(reason="Skipping for v0.0.1 release")
 @pytest.mark.asyncio
@@ -527,7 +531,7 @@ def call_model(
             # Store new memories if the user asks the model to remember
             if "remember" in last_message.content.lower():  # type:ignore[union-attr]
                 memory = "User name is Bob"
-                store.put(namespace, str(uuid.uuid4()), {"data": memory})
+                store.put(namespace, str(ULID()), {"data": memory})
 
             messages = [{"role": "system", "content": system_msg}]
             messages.extend([msg.model_dump() for msg in state["messages"]])
diff --git a/tests/test_store.py b/tests/test_store.py
index 4dd56d9..e47e958 100644
--- a/tests/test_store.py
+++ b/tests/test_store.py
@@ -1,4 +1,3 @@
-import uuid
 from typing import Any, Dict, Sequence, cast
 
 import pytest
@@ -6,6 +5,10 @@
 from langchain_core.messages import BaseMessage, HumanMessage
 from langchain_core.runnables import RunnableConfig
 from langchain_openai import OpenAIEmbeddings
+from redis import Redis
+from ulid import ULID
+
+from langgraph.checkpoint.redis import RedisSaver
 from langgraph.graph import START, MessagesState, StateGraph
 from langgraph.store.base import (
     BaseStore,
@@ -19,9 +22,6 @@
     SearchItem,
     SearchOp,
 )
-from redis import Redis
-
-from langgraph.checkpoint.redis import RedisSaver
 from langgraph.store.redis import RedisStore
 from tests.conftest import VECTOR_TYPES
 from tests.embed_test_utils import CharacterEmbeddings
@@ -464,7 +464,7 @@ def call_model(
             # Store new memories if the user asks the model to remember
             if "remember" in last_message.content.lower():  # type:ignore[union-attr]
                 memory = "User name is Bob"
-                store.put(namespace, str(uuid.uuid4()), {"data": memory})
+                store.put(namespace, str(ULID()), {"data": memory})
 
             messages = [{"role": "system", "content": system_msg}]
             messages.extend([msg.model_dump() for msg in state["messages"]])
diff --git a/tests/test_sync.py b/tests/test_sync.py
index 2f5323d..9e4b0a4 100644
--- a/tests/test_sync.py
+++ b/tests/test_sync.py
@@ -8,6 +8,9 @@
 from langchain_core.tools import tool
 from langchain_core.tools.base import BaseTool
 from langchain_openai import ChatOpenAI
+from redis import Redis
+from redis.exceptions import ConnectionError as RedisConnectionError
+
 from langgraph.checkpoint.base import (
     WRITES_IDX_MAP,
     Checkpoint,
@@ -15,11 +18,8 @@
     create_checkpoint,
     empty_checkpoint,
 )
-from langgraph.prebuilt import create_react_agent
-from redis import Redis
-from redis.exceptions import ConnectionError as RedisConnectionError
-
 from langgraph.checkpoint.redis import BaseRedisSaver, RedisSaver
+from langgraph.prebuilt import create_react_agent
 
 
 @pytest.fixture