diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index ffde3853..b93f57cf 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -17,7 +17,7 @@ dependencies = [
     "gcloud-aio-storage==9.6.1",
     "google-cloud-storage==3.7.0",
     "httpx==0.28.1",
-    "python-multipart==0.0.22",
+    "python-multipart==0.0.27",
 ]
 
 [project.optional-dependencies]
diff --git a/backend/uv.lock b/backend/uv.lock
index b42e69f3..cc6f45e7 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -219,7 +219,7 @@ requires-dist = [
     { name = "pydantic-settings", specifier = "==2.12.0" },
     { name = "pytest", marker = "extra == 'dev'", specifier = "==9.0.2" },
     { name = "pytest-asyncio", marker = "extra == 'dev'", specifier = "==1.3.0" },
-    { name = "python-multipart", specifier = "==0.0.22" },
+    { name = "python-multipart", specifier = "==0.0.27" },
     { name = "ruff", marker = "extra == 'dev'", specifier = "==0.14.10" },
     { name = "sqlmodel", specifier = "==0.0.27" },
     { name = "ty", marker = "extra == 'dev'", specifier = "==0.0.5" },
@@ -1508,11 +1508,11 @@ wheels = [
 
 [[package]]
 name = "python-multipart"
-version = "0.0.22"
+version = "0.0.27"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/94/01/979e98d542a70714b0cb2b6728ed0b7c46792b695e3eaec3e20711271ca3/python_multipart-0.0.22.tar.gz", hash = "sha256:7340bef99a7e0032613f56dc36027b959fd3b30a787ed62d310e951f7c3a3a58", size = 37612, upload-time = "2026-01-25T10:15:56.219Z" }
+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" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/1b/d0/397f9626e711ff749a95d96b7af99b9c566a9bb5129b8e4c10fc4d100304/python_multipart-0.0.22-py3-none-any.whl", hash = "sha256:2b2cd894c83d21bf49d702499531c7bafd057d730c201782048f7945d82de155", size = 24579, upload-time = "2026-01-25T10:15:54.811Z" },
+    { 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" },
 ]
 
 [[package]]