diff --git a/rag-doc-loader/package-lock.json b/rag-doc-loader/package-lock.json
index fc14323..b52fad2 100644
--- a/rag-doc-loader/package-lock.json
+++ b/rag-doc-loader/package-lock.json
@@ -13,7 +13,7 @@
         "@langchain/openai": "^0.2.8",
         "@neondatabase/serverless": "^0.9.4",
         "dotenv": "^16.4.5",
-        "langchain": "^0.2.17",
+        "langchain": "^0.2.20",
         "rag-doc-loader": "file:"
       },
       "devDependencies": {
@@ -6475,9 +6475,9 @@
       }
     },
     "node_modules/langchain": {
-      "version": "0.2.17",
-      "resolved": "https://registry.npmjs.org/langchain/-/langchain-0.2.17.tgz",
-      "integrity": "sha512-wFn7wo+XGzqYrv3KJLmMZ1M6BHx12C3YUSASOa03rcDsBzRL5onxhKAC/g4xAIqlAHrJYgU6Jb/T/S6uJ6UdkQ==",
+      "version": "0.2.20",
+      "resolved": "https://registry.npmjs.org/langchain/-/langchain-0.2.20.tgz",
+      "integrity": "sha512-tbels6Rr524iMM3VOQ4aTGnEOOjAA1BQuBR8u/8gJ2yT48lMtIQRAN32Y4KVjKK+hEWxHHlmLBrtgLpTphFjNA==",
       "dependencies": {
         "@langchain/core": ">=0.2.21 <0.3.0",
         "@langchain/openai": ">=0.1.0 <0.3.0",
@@ -6486,7 +6486,7 @@
         "js-tiktoken": "^1.0.12",
         "js-yaml": "^4.1.0",
         "jsonpointer": "^5.0.1",
-        "langsmith": "~0.1.40",
+        "langsmith": "^0.1.56-rc.1",
         "openapi-types": "^12.1.3",
         "p-retry": "4",
         "uuid": "^10.0.0",
@@ -6510,7 +6510,6 @@
         "@langchain/anthropic": "*",
         "@langchain/aws": "*",
         "@langchain/cohere": "*",
-        "@langchain/community": "*",
         "@langchain/google-genai": "*",
         "@langchain/google-vertexai": "*",
         "@langchain/groq": "*",
@@ -6546,7 +6545,7 @@
         "peggy": "^3.0.2",
         "playwright": "*",
         "puppeteer": "*",
-        "pyodide": "^0.24.1",
+        "pyodide": ">=0.24.1 <0.27.0",
         "redis": "*",
         "sonix-speech-recognition": "*",
         "srt-parser-2": "*",
@@ -6594,9 +6593,6 @@
         "@langchain/cohere": {
           "optional": true
         },
-        "@langchain/community": {
-          "optional": true
-        },
         "@langchain/google-genai": {
           "optional": true
         },
@@ -6761,9 +6757,9 @@
       }
     },
     "node_modules/langsmith": {
-      "version": "0.1.49",
-      "resolved": "https://registry.npmjs.org/langsmith/-/langsmith-0.1.49.tgz",
-      "integrity": "sha512-PI9qzBalZYpN2gu1kf1IX/+unRRXTiZRhtTKYfWcPyQVPZ5exZVJfZy515+FUp1iXdgacr2tS2ZtNGUB2Vdejg==",
+      "version": "0.1.68",
+      "resolved": "https://registry.npmjs.org/langsmith/-/langsmith-0.1.68.tgz",
+      "integrity": "sha512-otmiysWtVAqzMx3CJ4PrtUBhWRG5Co8Z4o7hSZENPjlit9/j3/vm3TSvbaxpDYakZxtMjhkcJTqrdYFipISEiQ==",
       "dependencies": {
         "@types/uuid": "^10.0.0",
         "commander": "^10.0.1",
@@ -6773,17 +6769,9 @@
         "uuid": "^10.0.0"
       },
       "peerDependencies": {
-        "@langchain/core": "*",
-        "langchain": "*",
         "openai": "*"
       },
       "peerDependenciesMeta": {
-        "@langchain/core": {
-          "optional": true
-        },
-        "langchain": {
-          "optional": true
-        },
         "openai": {
           "optional": true
         }
diff --git a/rag-doc-loader/package.json b/rag-doc-loader/package.json
index 7a0cdf0..b69be14 100644
--- a/rag-doc-loader/package.json
+++ b/rag-doc-loader/package.json
@@ -19,7 +19,7 @@
     "@langchain/openai": "^0.2.8",
     "@neondatabase/serverless": "^0.9.4",
     "dotenv": "^16.4.5",
-    "langchain": "^0.2.17",
+    "langchain": "^0.2.20",
     "rag-doc-loader": "file:"
   }
 }
diff --git a/rag-doc-loader/pnpm-lock.yaml b/rag-doc-loader/pnpm-lock.yaml
index d735ed7..3ec49dd 100644
--- a/rag-doc-loader/pnpm-lock.yaml
+++ b/rag-doc-loader/pnpm-lock.yaml
@@ -13,7 +13,7 @@ importers:
         version: 0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8))
       '@langchain/openai':
         specifier: ^0.2.8
-        version: 0.2.8(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))
+        version: 0.2.8
       '@neondatabase/serverless':
         specifier: ^0.9.4
         version: 0.9.4
@@ -21,8 +21,8 @@ importers:
         specifier: ^16.4.5
         version: 16.4.5
       langchain:
-        specifier: ^0.2.17
-        version: 0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
+        specifier: ^0.2.20
+        version: 0.2.20(openai@4.57.0(zod@3.23.8))
       rag-doc-loader:
         specifier: 'file:'
         version: file:(openai@4.57.0(zod@3.23.8))
@@ -615,8 +615,8 @@ packages:
     resolution: {integrity: sha512-p/nXbhSEcu3pZRdkW1OfJhpsVtW1gd4Wa1fnQc9YLiTfAjn0312eMKimbdIQzuZl9aa9xUGaRlP9T/CJE/ditQ==}
     engines: {node: '>=0.10.0'}
 
-  langchain@0.2.17:
-    resolution: {integrity: sha512-wFn7wo+XGzqYrv3KJLmMZ1M6BHx12C3YUSASOa03rcDsBzRL5onxhKAC/g4xAIqlAHrJYgU6Jb/T/S6uJ6UdkQ==}
+  langchain@0.2.20:
+    resolution: {integrity: sha512-tbels6Rr524iMM3VOQ4aTGnEOOjAA1BQuBR8u/8gJ2yT48lMtIQRAN32Y4KVjKK+hEWxHHlmLBrtgLpTphFjNA==}
     engines: {node: '>=18'}
     peerDependencies:
       '@aws-sdk/client-s3': '*'
@@ -631,7 +631,6 @@ packages:
       '@langchain/anthropic': '*'
       '@langchain/aws': '*'
       '@langchain/cohere': '*'
-      '@langchain/community': '*'
       '@langchain/google-genai': '*'
       '@langchain/google-vertexai': '*'
       '@langchain/groq': '*'
@@ -668,7 +667,7 @@ packages:
       peggy: ^3.0.2
       playwright: '*'
       puppeteer: '*'
-      pyodide: ^0.24.1
+      pyodide: '>=0.24.1 <0.27.0'
       redis: '*'
       sonix-speech-recognition: '*'
       srt-parser-2: '*'
@@ -703,8 +702,6 @@ packages:
         optional: true
       '@langchain/cohere':
         optional: true
-      '@langchain/community':
-        optional: true
       '@langchain/google-genai':
         optional: true
       '@langchain/google-vertexai':
@@ -812,6 +809,14 @@ packages:
       openai:
         optional: true
 
+  langsmith@0.1.68:
+    resolution: {integrity: sha512-otmiysWtVAqzMx3CJ4PrtUBhWRG5Co8Z4o7hSZENPjlit9/j3/vm3TSvbaxpDYakZxtMjhkcJTqrdYFipISEiQ==}
+    peerDependencies:
+      openai: '*'
+    peerDependenciesMeta:
+      openai:
+        optional: true
+
   make-error@1.3.6:
     resolution: {integrity: sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==}
 
@@ -1015,14 +1020,14 @@ snapshots:
 
   '@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8))':
     dependencies:
-      '@langchain/core': 0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
-      '@langchain/openai': 0.2.8(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))
+      '@langchain/core': 0.2.31(openai@4.57.0(zod@3.23.8))
+      '@langchain/openai': 0.2.8
       binary-extensions: 2.3.0
       expr-eval: 2.0.2
       flat: 5.0.2
       js-yaml: 4.1.0
-      langchain: 0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
-      langsmith: 0.1.49(@langchain/core@0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
+      langchain: 0.2.20(openai@4.57.0(zod@3.23.8))
+      langsmith: 0.1.49(@langchain/core@0.2.31(openai@4.57.0(zod@3.23.8)))(langchain@0.2.20(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
       uuid: 10.0.0
       zod: 3.23.8
       zod-to-json-schema: 3.23.2(zod@3.23.8)
@@ -1046,13 +1051,13 @@ snapshots:
       - peggy
       - pyodide
 
-  '@langchain/core@0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))':
+  '@langchain/core@0.2.31(openai@4.57.0(zod@3.23.8))':
     dependencies:
       ansi-styles: 5.2.0
       camelcase: 6.3.0
       decamelize: 1.2.0
       js-tiktoken: 1.0.14
-      langsmith: 0.1.49(@langchain/core@0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
+      langsmith: 0.1.68(openai@4.57.0(zod@3.23.8))
       mustache: 4.2.0
       p-queue: 6.6.2
       p-retry: 4.6.2
@@ -1060,26 +1065,23 @@ snapshots:
       zod: 3.23.8
       zod-to-json-schema: 3.23.2(zod@3.23.8)
     transitivePeerDependencies:
-      - langchain
       - openai
 
-  '@langchain/openai@0.2.8(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))':
+  '@langchain/openai@0.2.8':
     dependencies:
-      '@langchain/core': 0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
+      '@langchain/core': 0.2.31(openai@4.57.0(zod@3.23.8))
       js-tiktoken: 1.0.14
       openai: 4.57.0(zod@3.23.8)
       zod: 3.23.8
       zod-to-json-schema: 3.23.2(zod@3.23.8)
     transitivePeerDependencies:
       - encoding
-      - langchain
 
-  '@langchain/textsplitters@0.0.3(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))':
+  '@langchain/textsplitters@0.0.3(openai@4.57.0(zod@3.23.8))':
     dependencies:
-      '@langchain/core': 0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
+      '@langchain/core': 0.2.31(openai@4.57.0(zod@3.23.8))
       js-tiktoken: 1.0.14
     transitivePeerDependencies:
-      - langchain
       - openai
 
   '@neondatabase/serverless@0.9.4':
@@ -1244,29 +1246,40 @@ snapshots:
 
   jsonpointer@5.0.1: {}
 
-  langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)):
+  langchain@0.2.20(openai@4.57.0(zod@3.23.8)):
     dependencies:
-      '@langchain/core': 0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
-      '@langchain/openai': 0.2.8(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))
-      '@langchain/textsplitters': 0.0.3(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
+      '@langchain/core': 0.2.31(openai@4.57.0(zod@3.23.8))
+      '@langchain/openai': 0.2.8
+      '@langchain/textsplitters': 0.0.3(openai@4.57.0(zod@3.23.8))
       binary-extensions: 2.3.0
       js-tiktoken: 1.0.14
       js-yaml: 4.1.0
       jsonpointer: 5.0.1
-      langsmith: 0.1.49(@langchain/core@0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
+      langsmith: 0.1.68(openai@4.57.0(zod@3.23.8))
       openapi-types: 12.1.3
       p-retry: 4.6.2
       uuid: 10.0.0
       yaml: 2.5.0
       zod: 3.23.8
       zod-to-json-schema: 3.23.2(zod@3.23.8)
-    optionalDependencies:
-      '@langchain/community': 0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8))
     transitivePeerDependencies:
       - encoding
       - openai
 
-  langsmith@0.1.49(@langchain/core@0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)):
+  langsmith@0.1.49(@langchain/core@0.2.31(openai@4.57.0(zod@3.23.8)))(langchain@0.2.20(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)):
+    dependencies:
+      '@types/uuid': 10.0.0
+      commander: 10.0.1
+      p-queue: 6.6.2
+      p-retry: 4.6.2
+      semver: 7.6.3
+      uuid: 10.0.0
+    optionalDependencies:
+      '@langchain/core': 0.2.31(openai@4.57.0(zod@3.23.8))
+      langchain: 0.2.20(openai@4.57.0(zod@3.23.8))
+      openai: 4.57.0(zod@3.23.8)
+
+  langsmith@0.1.68(openai@4.57.0(zod@3.23.8)):
     dependencies:
       '@types/uuid': 10.0.0
       commander: 10.0.1
@@ -1275,8 +1288,6 @@ snapshots:
       semver: 7.6.3
       uuid: 10.0.0
     optionalDependencies:
-      '@langchain/core': 0.2.31(langchain@0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
-      langchain: 0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
       openai: 4.57.0(zod@3.23.8)
 
   make-error@1.3.6: {}
@@ -1370,9 +1381,10 @@ snapshots:
   rag-doc-loader@file:(openai@4.57.0(zod@3.23.8)):
     dependencies:
       '@langchain/community': 0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8))
+      '@langchain/openai': 0.2.8
       '@neondatabase/serverless': 0.9.4
       dotenv: 16.4.5
-      langchain: 0.2.17(@langchain/community@0.2.31(@neondatabase/serverless@0.9.4)(openai@4.57.0(zod@3.23.8)))(openai@4.57.0(zod@3.23.8))
+      langchain: 0.2.20(openai@4.57.0(zod@3.23.8))
     transitivePeerDependencies:
       - '@aws-crypto/sha256-js'
       - '@aws-sdk/client-bedrock-agent-runtime'