diff --git a/backend/requirements.txt b/backend/requirements.txt
index ce55d2d347a..f16147d8571 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -60,7 +60,7 @@ einops==0.8.1
 
 
 ftfy==6.2.3
-pypdf==4.3.1
+pypdf==6.6.0
 fpdf2==2.8.2
 pymdown-extensions==10.14.2
 docx2txt==0.8
@@ -138,3 +138,6 @@ opentelemetry-instrumentation-requests==0.53b1
 opentelemetry-instrumentation-logging==0.53b1
 opentelemetry-instrumentation-httpx==0.53b1
 opentelemetry-instrumentation-aiohttp-client==0.53b1
+filelock>=3.20.3 # not directly required, pinned by Snyk to avoid a vulnerability
+torch>=2.9.0 # not directly required, pinned by Snyk to avoid a vulnerability
+urllib3>=2.6.3 # not directly required, pinned by Snyk to avoid a vulnerability