diff --git a/archive/server_old/package-lock.json b/archive/server_old/package-lock.json
index 0880f40..4b6fa9a 100644
--- a/archive/server_old/package-lock.json
+++ b/archive/server_old/package-lock.json
@@ -18,7 +18,7 @@
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@@ -705,6 +694,101 @@
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+      "resolved": "https://registry.npmjs.org/langchain/-/langchain-0.3.37.tgz",
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+        "@langchain/cerebras": "*",
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+        "@langchain/google-vertexai-web": "*",
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+        "@langchain/cerebras": {
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+        },
+        "@langchain/google-vertexai": {
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+        },
+        "@langchain/google-vertexai-web": {
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+        "@langchain/groq": {
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+        },
+        "@langchain/mistralai": {
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+        "@langchain/ollama": {
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@@ -859,6 +943,12 @@
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-    "node_modules/@protobufjs/inquire": {
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@@ -1000,6 +1032,12 @@
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@@ -2409,6 +2447,18 @@
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+      "resolved": "https://registry.npmjs.org/is-network-error/-/is-network-error-1.3.2.tgz",
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+      "engines": {
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+      },
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@@ -2561,111 +2611,173 @@
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     "node_modules/protobufjs": {
-      "version": "7.5.4",
-      "resolved": "https://registry.npmjs.org/protobufjs/-/protobufjs-7.5.4.tgz",
-      "integrity": "sha512-CvexbZtbov6jW2eXAvLukXjXUW1TzFaivC46BpWc/3BpcCysb5Vffu+B3XHMm8lVEuy2Mm4XGex8hBSg1yapPg==",
-      "hasInstallScript": true,
+      "version": "8.6.5",
+      "resolved": "https://registry.npmjs.org/protobufjs/-/protobufjs-8.6.5.tgz",
+      "integrity": "sha512-zeE5LPpencAGXvsxyOYmEgJhxzHY8IsmPAFzstZVhDSVT8QH03q6gMZwZRaQGApevZbAL6u28ugs4CC+YKB2jQ==",
       "license": "BSD-3-Clause",
       "dependencies": {
-        "@protobufjs/aspromise": "^1.1.2",
-        "@protobufjs/base64": "^1.1.2",
-        "@protobufjs/codegen": "^2.0.4",
-        "@protobufjs/eventemitter": "^1.1.0",
-        "@protobufjs/fetch": "^1.1.0",
-        "@protobufjs/float": "^1.0.2",
-        "@protobufjs/inquire": "^1.1.0",
-        "@protobufjs/path": "^1.1.2",
-        "@protobufjs/pool": "^1.1.0",
-        "@protobufjs/utf8": "^1.1.0",
-        "@types/node": ">=13.7.0",
-        "long": "^5.0.0"
+        "long": "^5.3.2"
       },
       "engines": {
         "node": ">=12.0.0"
@@ -4013,15 +4113,18 @@
       }
     },
     "node_modules/yaml": {
-      "version": "2.8.1",
-      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.8.1.tgz",
-      "integrity": "sha512-lcYcMxX2PO9XMGvAJkJ3OsNMw+/7FKes7/hgerGUYWIoWu5j/+YQqcZr5JnPZWzOsEBgMbSbiSTn/dv/69Mkpw==",
+      "version": "2.9.0",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.9.0.tgz",
+      "integrity": "sha512-2AvhNX3mb8zd6Zy7INTtSpl1F15HW6Wnqj0srWlkKLcpYl/gMIMJiyuGq2KeI2YFxUPjdlB+3Lc10seMLtL4cA==",
       "license": "ISC",
       "bin": {
         "yaml": "bin.mjs"
       },
       "engines": {
         "node": ">= 14.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/eemeli"
       }
     },
     "node_modules/yargs": {
diff --git a/archive/server_old/package.json b/archive/server_old/package.json
index 2480d50..751856b 100644
--- a/archive/server_old/package.json
+++ b/archive/server_old/package.json
@@ -20,7 +20,7 @@
     "cors": "^2.8.5",
     "dotenv": "^16.6.1",
     "express": "^4.18.2",
-    "langchain": "^0.3.33",
+    "langchain": "^1.5.2",
     "nodemon": "^3.0.2",
     "openai": "^4.24.3",
     "pdf-parse": "^1.1.1"