diff --git a/AI-Travel-Agent/requirements.txt b/AI-Travel-Agent/requirements.txt
index 30fd813..1b8bfc1 100644
--- a/AI-Travel-Agent/requirements.txt
+++ b/AI-Travel-Agent/requirements.txt
@@ -1,7 +1,7 @@
 amadeus==12.0.0
 ipykernel==7.2.0
 jupyter==1.1.1
-langchain==1.2.13
+langchain==1.2.15
 langchain-community==0.4.1
 streamlit==1.55.0
 huggingface-hub==1.9.0
diff --git a/Text-Summarizer-Browser-Plugin/requirements.txt b/Text-Summarizer-Browser-Plugin/requirements.txt
index e6bd756..6d69aa5 100644
--- a/Text-Summarizer-Browser-Plugin/requirements.txt
+++ b/Text-Summarizer-Browser-Plugin/requirements.txt
@@ -1,6 +1,6 @@
 flask==3.1.3
 flask_cors==6.0.2
-langchain==1.2.13
+langchain==1.2.15
 langchain-community==0.4.1
 sentence-transformers==5.3.0
 langchain_chroma==1.1.0