diff --git a/examples/example-ai-langgraph/uv.lock b/examples/example-ai-langgraph/uv.lock
index cb5fab73..5dc444a7 100644
--- a/examples/example-ai-langgraph/uv.lock
+++ b/examples/example-ai-langgraph/uv.lock
@@ -443,15 +443,15 @@ wheels = [
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "4.0.1"
+version = "4.1.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "langchain-core" },
     { name = "ormsgpack" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/b1/44/a8df45d1e8b4637e29789fa8bae1db022c953cc7ac80093cfc52e923547e/langgraph_checkpoint-4.0.1.tar.gz", hash = "sha256:b433123735df11ade28829e40ce25b9be614930cd50245ff2af60629234befd9", size = 158135, upload-time = "2026-02-27T21:06:16.092Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/83/47/886af6f886f0bff2273164a45f008694e48a96ff3cd25ff0228f2aa9480e/langgraph_checkpoint-4.1.1.tar.gz", hash = "sha256:6c2bdb530c91f91d7d9c1bd100925d0fc4f498d418c17f3587d1526279482a25", size = 184020, upload-time = "2026-05-22T16:57:38.503Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/65/4c/09a4a0c42f5d2fc38d6c4d67884788eff7fd2cfdf367fdf7033de908b4c0/langgraph_checkpoint-4.0.1-py3-none-any.whl", hash = "sha256:e3adcd7a0e0166f3b48b8cf508ce0ea366e7420b5a73aa81289888727769b034", size = 50453, upload-time = "2026-02-27T21:06:14.293Z" },
+    { url = "https://files.pythonhosted.org/packages/bd/b4/71425e3e38be92611300b9cc5e46a5bf98ab23f5ea8a75b73d02a2f1413c/langgraph_checkpoint-4.1.1-py3-none-any.whl", hash = "sha256:25d29144b082827218e7bc3f1e9b0566a4bb007895cd6cc26f66a8428739f56e", size = 56212, upload-time = "2026-05-22T16:57:37.203Z" },
 ]
 
 [[package]]
@@ -792,7 +792,7 @@ wheels = [
 
 [[package]]
 name = "posthog"
-version = "7.21.0"
+version = "7.21.1"
 source = { directory = "../../" }
 dependencies = [
     { name = "backoff" },
@@ -826,7 +826,7 @@ requires-dist = [
     { name = "langchain-core", marker = "extra == 'test'", specifier = ">=1.0" },
     { name = "langchain-openai", marker = "extra == 'test'", specifier = ">=1.0" },
     { name = "langgraph", marker = "extra == 'test'", specifier = ">=1.0" },
-    { name = "langgraph-checkpoint", marker = "extra == 'test'", specifier = ">=3.0.1" },
+    { name = "langgraph-checkpoint", marker = "extra == 'test'", specifier = ">=4.1.1" },
     { name = "lxml", marker = "extra == 'dev'" },
     { name = "mcp", marker = "extra == 'test'", specifier = ">=1.26.0" },
     { name = "mypy", marker = "extra == 'dev'" },
diff --git a/pyproject.toml b/pyproject.toml
index b120e34e..5c30ed33 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,7 +74,7 @@ test = [
     "openai>=2.0",
     "anthropic>=0.72",
     "langgraph>=1.0",
-    "langgraph-checkpoint>=3.0.1",
+    "langgraph-checkpoint>=4.1.1",
     "tiktoken>=0.12.0",
     "langchain-core>=1.0",
     "langchain-community>=0.4",