diff --git a/backend/requirements.txt b/backend/requirements.txt
index 58710150751..f12beb6dc0d 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,15 +1,15 @@
 fastapi==0.115.7
 uvicorn[standard]==0.35.0
 pydantic==2.11.7
-python-multipart==0.0.20
+python-multipart==0.0.22
 
 python-socketio==5.13.0
 python-jose==3.4.0
 passlib[bcrypt]==1.7.4
 cryptography
 
-requests==2.32.4
-aiohttp==3.12.15
+requests==2.33.0
+aiohttp==3.13.4
 async-timeout
 aiocache
 aiofiles
@@ -69,13 +69,13 @@ einops==0.8.1
 
 
 ftfy==6.2.3
-pypdf==6.0.0
+pypdf==6.10.0
 fpdf2==2.8.2
-pymdown-extensions==10.14.2
+pymdown-extensions==10.16.1
 docx2txt==0.8
 python-pptx==1.0.2
-unstructured==0.16.17
-nltk==3.9.1
+unstructured==0.18.18
+nltk==3.9.4
 Markdown==3.8.2
 pypandoc==1.15
 pandas==2.2.3
@@ -88,7 +88,7 @@ sentencepiece
 soundfile==0.13.1
 azure-ai-documentintelligence==1.0.2
 
-pillow==11.3.0
+pillow==12.2.0
 opencv-python-headless==4.11.0.86
 rapidocr-onnxruntime==1.4.4
 rank-bm25==0.2.2
@@ -98,9 +98,9 @@ onnxruntime==1.20.1
 faster-whisper==1.1.1
 
 PyJWT[crypto]==2.10.1
-authlib==1.6.3
+authlib==1.6.9
 
-black==25.1.0
+black==26.3.1
 youtube-transcript-api==1.2.2
 pytube==15.0.0