diff --git a/packages/soc-toolkit/backend/poetry.lock b/packages/soc-toolkit/backend/poetry.lock
index 93c36d4..9124197 100644
--- a/packages/soc-toolkit/backend/poetry.lock
+++ b/packages/soc-toolkit/backend/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.3.4 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand.
 
 [[package]]
 name = "aiohappyeyeballs"
@@ -787,11 +787,11 @@ description = "Cross-platform colored terminal text."
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
 groups = ["main", "dev"]
+markers = "platform_system == \"Windows\" or sys_platform == \"win32\""
 files = [
     {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
 ]
-markers = {main = "platform_system == \"Windows\" or sys_platform == \"win32\"", dev = "sys_platform == \"win32\" or platform_system == \"Windows\""}
 
 [[package]]
 name = "coverage"
@@ -3331,14 +3331,14 @@ cli = ["click (>=5.0)"]
 
 [[package]]
 name = "python-multipart"
-version = "0.0.18"
+version = "0.0.29"
 description = "A streaming multipart parser for Python"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.10"
 groups = ["main"]
 files = [
-    {file = "python_multipart-0.0.18-py3-none-any.whl", hash = "sha256:efe91480f485f6a361427a541db4796f9e1591afc0fb8e7a4ba06bfbc6708996"},
-    {file = "python_multipart-0.0.18.tar.gz", hash = "sha256:7a68db60c8bfb82e460637fa4750727b45af1d5e2ed215593f917f64694d34fe"},
+    {file = "python_multipart-0.0.29-py3-none-any.whl", hash = "sha256:2ddcc971cef266225f54f552d8fa10bcfbb1f14446caec199060daac59ff2d69"},
+    {file = "python_multipart-0.0.29.tar.gz", hash = "sha256:643e93849196645e2dbdd81a0f8829a23123ad7f797a84a364c6fb3563f18904"},
 ]
 
 [[package]]
@@ -4574,4 +4574,4 @@ test = ["pytest"]
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.12"
-content-hash = "54d77fd5bf4f25812fd6cd92cf33c2f3dce3d41c86feaec34220496e5f16aaaf"
+content-hash = "b41391ea5a43ac183de1a9d341b3eddffdf4480275fe3387d4eb5cbfd98f81ca"
diff --git a/packages/soc-toolkit/backend/pyproject.toml b/packages/soc-toolkit/backend/pyproject.toml
index 80691fa..3741b6f 100644
--- a/packages/soc-toolkit/backend/pyproject.toml
+++ b/packages/soc-toolkit/backend/pyproject.toml
@@ -17,7 +17,7 @@ pydantic-settings = "^2.7.0"
 sqlalchemy = "^2.0.0"
 aiosqlite = "^0.20.0"
 httpx = "^0.28.0"
-python-multipart = "^0.0.18"
+python-multipart = ">=0.0.18,<0.0.30"
 weasyprint = "^63.0"
 jinja2 = "^3.1.0"
 python-dotenv = "^1.0.0"