diff --git a/recipes/natural_language_processing/chatbot/app/requirements.txt b/recipes/natural_language_processing/chatbot/app/requirements.txt
index 3d2031ab2..4ed85f8fe 100644
--- a/recipes/natural_language_processing/chatbot/app/requirements.txt
+++ b/recipes/natural_language_processing/chatbot/app/requirements.txt
@@ -1,3 +1,3 @@
-langchain==0.1.20
+langchain==0.2.1
 langchain-openai==0.1.7
 streamlit==1.34.0
diff --git a/recipes/natural_language_processing/codegen/app/requirements.txt b/recipes/natural_language_processing/codegen/app/requirements.txt
index 3d2031ab2..4ed85f8fe 100644
--- a/recipes/natural_language_processing/codegen/app/requirements.txt
+++ b/recipes/natural_language_processing/codegen/app/requirements.txt
@@ -1,3 +1,3 @@
-langchain==0.1.20
+langchain==0.2.1
 langchain-openai==0.1.7
 streamlit==1.34.0
diff --git a/recipes/natural_language_processing/rag/app/requirements.txt b/recipes/natural_language_processing/rag/app/requirements.txt
index 709073499..50db4b34c 100644
--- a/recipes/natural_language_processing/rag/app/requirements.txt
+++ b/recipes/natural_language_processing/rag/app/requirements.txt
@@ -1,8 +1,7 @@
 langchain-openai==0.1.7
-langchain==0.1.20
+langchain==0.2.1
 chromadb==0.5.0
 sentence-transformers==2.7.0
 streamlit==1.34.0
 pypdf==4.2.0
 pymilvus==2.4.1
-
diff --git a/recipes/natural_language_processing/summarizer/app/requirements.txt b/recipes/natural_language_processing/summarizer/app/requirements.txt
index b870e6813..48fb370ee 100644
--- a/recipes/natural_language_processing/summarizer/app/requirements.txt
+++ b/recipes/natural_language_processing/summarizer/app/requirements.txt
@@ -1,4 +1,4 @@
-langchain==0.1.20
+langchain==0.2.
 langchain-openai==0.1.7
 streamlit==1.34.0
 PyMuPDF==1.24.4