diff --git a/src/backend-api/pyproject.toml b/src/backend-api/pyproject.toml
index a877c5d9..d614d1b1 100644
--- a/src/backend-api/pyproject.toml
+++ b/src/backend-api/pyproject.toml
@@ -17,7 +17,7 @@ dependencies = [
     "httpx==0.28.1",
     "pydantic-settings==2.13.1",
     "python-dotenv==1.2.2",
-    "python-multipart==0.0.27",
+    "python-multipart==0.0.31",
     "protobuf==7.34.0",
     "sas-cosmosdb==0.1.5",
     "semantic-kernel[azure]==1.41.1",
diff --git a/src/backend-api/uv.lock b/src/backend-api/uv.lock
index 54c9a421..aab0d8bc 100644
--- a/src/backend-api/uv.lock
+++ b/src/backend-api/uv.lock
@@ -217,7 +217,7 @@ requires-dist = [
     { name = "protobuf", specifier = "==7.34.0" },
     { name = "pydantic-settings", specifier = "==2.13.1" },
     { name = "python-dotenv", specifier = "==1.2.2" },
-    { name = "python-multipart", specifier = "==0.0.27" },
+    { name = "python-multipart", specifier = "==0.0.31" },
     { name = "sas-cosmosdb", specifier = "==0.1.5" },
     { name = "semantic-kernel", extras = ["azure"], specifier = "==1.41.1" },
     { name = "uvicorn", specifier = "==0.42.0" },
@@ -2592,11 +2592,11 @@ 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]]