diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 242bb4c8..5d025d01 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -21,7 +21,7 @@ dependencies = [
     "pydantic_settings==2.14.2",
     "pyjwt==2.13.0",
     "python-dotenv==1.2.2",
-    "python-multipart==0.0.27",
+    "python-multipart==0.0.31",
     "sentry-sdk==2.63.0",
     "sqlalchemy==2.0.44",
     "sqlalchemy-stubs==0.4",
diff --git a/backend/uv.lock b/backend/uv.lock
index 6e1168be..21daf6f9 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -450,7 +450,7 @@ requires-dist = [
     { name = "pydantic-settings", specifier = "==2.14.2" },
     { name = "pyjwt", specifier = "==2.13.0" },
     { name = "python-dotenv", specifier = "==1.2.2" },
-    { name = "python-multipart", specifier = "==0.0.27" },
+    { name = "python-multipart", specifier = "==0.0.31" },
     { name = "sentry-sdk", specifier = "==2.63.0" },
     { name = "sqlalchemy", specifier = "==2.0.44" },
     { name = "sqlalchemy-stubs", specifier = "==0.4" },
@@ -1594,11 +1594,11 @@ 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]]