diff --git a/examples/langchain-docscanner/requirements.txt b/examples/langchain-docscanner/requirements.txt
index 90301028..37ee5e02 100644
--- a/examples/langchain-docscanner/requirements.txt
+++ b/examples/langchain-docscanner/requirements.txt
@@ -1,10 +1,10 @@
-langchain
-pypdf
-chromadb
-tiktoken
-docx2txt
-unstructured
-gradio
-pillow
-matplotlib==1.5
-Numpy==1.23.5
+langchain==0.0.313
+pypdf==3.16.4
+chromadb==0.4.14
+tiktoken==0.5.1
+docx2txt==0.8
+unstructured==0.10.25
+gradio==3.50.2
+Pillow==10.1.0
+matplotlib==3.8.0
+numpy==1.23.5