diff --git a/backend/requirements/default.txt b/backend/requirements/default.txt
index f9463cbc672..ffbe1af7f74 100644
--- a/backend/requirements/default.txt
+++ b/backend/requirements/default.txt
@@ -2377,9 +2377,9 @@ python-magic==0.4.27 \
     --hash=sha256:c1ba14b08e4a5f5c31a302b7721239695b2f0f058d125bd5ce1ee36b9d9d3c3b \
     --hash=sha256:c212960ad306f700aa0d01e5d7a325d20548ff97eb9920dcd29513174f0294d3
     # via unstructured
-python-multipart==0.0.27 \
-    --hash=sha256:6fccfad17a27334bd0193681b369f476eda3409f17381a2d65aa7df3f7275645 \
-    --hash=sha256:9870a6a8c5a20a5bf4f07c017bd1489006ff8836cff097b6933355ee2b49b602
+python-multipart==0.0.31 \
+    --hash=sha256:8408153d68a9773291fc1da39a8b85a50044bddbabd2dd72e9229776b7b15e28 \
+    --hash=sha256:fc631183bb13e56db3158a4909908dfb2e23565286744e798241e63750e5d680
     # via
     #   fastapi-users
     #   mcp