diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 25992598d..fed35ae9b 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -13,3 +13,12 @@ updates:
       github-actions:
         patterns:
           - "*"
+
+  - package-ecosystem: "docker"
+    directory: "/docker"
+    schedule:
+      interval: "daily"
+      time: "15:25"
+      timezone: "Asia/Shanghai"
+    commit-message:
+      prefix: "chore(deps): "
diff --git a/example/pcap-analyzer/requirements.txt b/example/pcap-analyzer/requirements.txt
index 9003d1cdf..8752f35c9 100644
--- a/example/pcap-analyzer/requirements.txt
+++ b/example/pcap-analyzer/requirements.txt
@@ -7,7 +7,7 @@ langchain-core==1.0.1
 langchain-openai==1.0.1
 langchain-text-splitters==1.0.0
 langgraph==1.0.1
-langgraph-checkpoint==3.0.0
+langgraph-checkpoint==4.1.1
 langgraph-prebuilt==1.0.1
 langgraph-sdk==0.2.9
 langsmith==0.4.38