diff --git a/examples/langchain/package-lock.json b/examples/langchain/package-lock.json
index 81d32248..29fbf52a 100644
--- a/examples/langchain/package-lock.json
+++ b/examples/langchain/package-lock.json
@@ -766,6 +766,7 @@
         "@hiero-ledger/sdk": "2.81.0",
         "@langchain/openai": "1.2.7",
         "dotenv": "17.2.1",
+        "long": "5.3.2",
         "tsup": "8.5.0",
         "typescript": "5.8.3",
         "vitest": "4.0.16"
@@ -6165,7 +6166,9 @@
       }
     },
     "node_modules/undici": {
-      "version": "7.24.7",
+      "version": "7.28.0",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-7.28.0.tgz",
+      "integrity": "sha512-cRZYrTDwWznlnRiPjggAGxZXanty6M8RV1ff8Wm4LWXBp7/IG8v5DnOm74DtUBp9OONpK75YlPnIjQqX0dBDtA==",
       "license": "MIT",
       "engines": {
         "node": ">=20.18.1"