diff --git a/backend/requirements.txt b/backend/requirements.txt
index 598613e..6a00fc2 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -18,6 +18,8 @@ langchain_chroma
 flashrank
 psycopg2
 unstructured-client
+python-libmagic
+poppler-utils
 langchain-unstructured
 langgraph
 gpt_researcher
diff --git a/backend/server.py b/backend/server.py
index 02f9a28..39578e7 100644
--- a/backend/server.py
+++ b/backend/server.py
@@ -1,5 +1,4 @@
 from __future__ import annotations
-import asyncio
 import json
 from typing import List
 
diff --git a/ss-cross-browser-extension b/ss-cross-browser-extension
index 8e699e3..8b1635d 160000
--- a/ss-cross-browser-extension
+++ b/ss-cross-browser-extension
@@ -1 +1 @@
-Subproject commit 8e699e3e6f2037ce8f2af3d36c55ff4c67f4c5af
+Subproject commit 8b1635dc2756f86f0a24df6eeaa94519e0518aae