diff --git a/package-lock.json b/package-lock.json
index 6dc6d4c..3a66854 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "license": "MIT",
       "dependencies": {
         "@castleio/castle-js": "^2.8.4",
-        "@castleio/sdk": "^3.0.0",
+        "@castleio/sdk": "file:vendor/castleio-sdk-3.1.0.tgz",
         "dotenv": "^17.4.2",
         "express": "^5.2.1",
         "pug": "^3.0.3"
@@ -558,9 +558,9 @@
       "license": "MIT"
     },
     "node_modules/@castleio/sdk": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/@castleio/sdk/-/sdk-3.0.0.tgz",
-      "integrity": "sha512-gQq9xKmjUHm0v+8TMq1b4FY0C14HYJELGveuXDx6a0/2WBU93mcvDVW2GqwSytvk91pHwwHVv3GM3esAerdOCg==",
+      "version": "3.1.0",
+      "resolved": "file:vendor/castleio-sdk-3.1.0.tgz",
+      "integrity": "sha512-WnVrezeuXqVxeRBt1pGeNw5vRMsEgW2EQS1PnBYNWbU0obBO14hEfcOWy8kPQlXO+GzWDGAJDlpS62yTpAPlDA==",
       "license": "MIT",
       "dependencies": {
         "pino": "^9.7.0",
diff --git a/package.json b/package.json
index 3be1fdf..6e295a4 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   },
   "dependencies": {
     "@castleio/castle-js": "^2.8.4",
-    "@castleio/sdk": "^3.0.0",
+    "@castleio/sdk": "file:vendor/castleio-sdk-3.1.0.tgz",
     "dotenv": "^17.4.2",
     "express": "^5.2.1",
     "pug": "^3.0.3"
diff --git a/vendor/castleio-sdk-3.1.0.tgz b/vendor/castleio-sdk-3.1.0.tgz
new file mode 100644
index 0000000..370e562
Binary files /dev/null and b/vendor/castleio-sdk-3.1.0.tgz differ