diff --git a/src/backend/pyproject.toml b/src/backend/pyproject.toml
index 179dd3a38..edd42f725 100644
--- a/src/backend/pyproject.toml
+++ b/src/backend/pyproject.toml
@@ -22,7 +22,7 @@ dependencies = [
     "opentelemetry-instrumentation-openai==0.60.0",
     "opentelemetry-sdk==1.40.0",
     "python-dotenv==1.2.2",
-    "python-multipart==0.0.27",
+    "python-multipart==0.0.31",
     "uvicorn==0.46.0",
     "pylint-pydantic==0.4.1",
     "pexpect==4.9.0",
diff --git a/src/backend/requirements.txt b/src/backend/requirements.txt
index fadff5bad..15f461a28 100644
--- a/src/backend/requirements.txt
+++ b/src/backend/requirements.txt
@@ -5,7 +5,7 @@ azure-monitor-opentelemetry==1.8.7
 azure-monitor-events-extension==0.1.0
 azure-identity==1.25.3
 python-dotenv==1.2.2
-python-multipart==0.0.27
+python-multipart==0.0.31
 opentelemetry-api==1.40.0
 opentelemetry-sdk==1.40.0
 opentelemetry-exporter-otlp-proto-grpc==1.40.0
diff --git a/src/backend/uv.lock b/src/backend/uv.lock
index ef5c4e854..9a98a22d5 100644
--- a/src/backend/uv.lock
+++ b/src/backend/uv.lock
@@ -537,7 +537,7 @@ requires-dist = [
     { name = "pytest-asyncio", marker = "extra == 'dev'", specifier = "==1.3.0" },
     { name = "pytest-cov", marker = "extra == 'dev'", specifier = "==7.1.0" },
     { name = "python-dotenv", specifier = "==1.2.2" },
-    { name = "python-multipart", specifier = "==0.0.27" },
+    { name = "python-multipart", specifier = "==0.0.31" },
     { name = "urllib3", specifier = "==2.7.0" },
     { name = "uvicorn", specifier = "==0.46.0" },
     { name = "werkzeug", specifier = "==3.1.8" },
@@ -2511,11 +2511,11 @@ wheels = [
 
 [[package]]
 name = "python-multipart"
-version = "0.0.27"
+version = "0.0.31"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/69/9b/f23807317a113dc36e74e75eb265a02dd1a4d9082abc3c1064acd22997c4/python_multipart-0.0.27.tar.gz", hash = "sha256:9870a6a8c5a20a5bf4f07c017bd1489006ff8836cff097b6933355ee2b49b602", size = 44043, upload-time = "2026-04-27T10:51:26.649Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/64/7e/9b35ad8f3d9ca680f7c87a88f19612fdd8da9796c4d3b46e560ac79dcc4a/python_multipart-0.0.31.tar.gz", hash = "sha256:fc631183bb13e56db3158a4909908dfb2e23565286744e798241e63750e5d680", size = 46689, upload-time = "2026-06-04T08:27:49.014Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/99/78/4126abcbdbd3c559d43e0db7f7b9173fc6befe45d39a2856cc0b8ec2a5a6/python_multipart-0.0.27-py3-none-any.whl", hash = "sha256:6fccfad17a27334bd0193681b369f476eda3409f17381a2d65aa7df3f7275645", size = 29254, upload-time = "2026-04-27T10:51:24.997Z" },
+    { url = "https://files.pythonhosted.org/packages/5e/1e/7f7f299527a5a8ad90acd5f2f78dfa6c8495c6301a3205106ea68a84de96/python_multipart-0.0.31-py3-none-any.whl", hash = "sha256:8408153d68a9773291fc1da39a8b85a50044bddbabd2dd72e9229776b7b15e28", size = 29996, upload-time = "2026-06-04T08:27:47.804Z" },
 ]
 
 [[package]]