diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index fcd9af8a..46261a6b 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -14,7 +14,7 @@ requires-python = ">=3.12"
 dependencies = [
     "alembic==1.18.3",
     "clerk-backend-api==4.2.0",
-    "fastapi==0.128.6",
+    "fastapi==0.131.0",
     "fastapi-pagination==0.15.10",
     "jinja2==3.1.6",
     "psycopg[binary]==3.3.2",
diff --git a/backend/tests/test_gateway_version_compat.py b/backend/tests/test_gateway_version_compat.py
index a33a84ea..5e6039d1 100644
--- a/backend/tests/test_gateway_version_compat.py
+++ b/backend/tests/test_gateway_version_compat.py
@@ -47,7 +47,9 @@ def test_extract_config_last_touched_version_reads_config_meta_last_touched_vers
     assert gateway_compat.extract_config_last_touched_version(payload) == "2026.2.9"
 
 
-def test_extract_config_last_touched_version_returns_none_without_config_meta_last_touched_version() -> None:
+def test_extract_config_last_touched_version_returns_none_without_config_meta_last_touched_version() -> (
+    None
+):
     payload = {
         "config": {"wizard": {"lastRunVersion": "2026.2.9"}},
     }
diff --git a/backend/uv.lock b/backend/uv.lock
index 8b82574f..8136c6ad 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -329,7 +329,7 @@ wheels = [
 
 [[package]]
 name = "fastapi"
-version = "0.128.6"
+version = "0.131.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "annotated-doc" },
@@ -338,9 +338,9 @@ dependencies = [
     { name = "typing-extensions" },
     { name = "typing-inspection" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/83/d1/195005b5e45b443e305136df47ee7df4493d782e0c039dd0d97065580324/fastapi-0.128.6.tar.gz", hash = "sha256:0cb3946557e792d731b26a42b04912f16367e3c3135ea8290f620e234f2b604f", size = 374757, upload-time = "2026-02-09T17:27:03.541Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/91/32/158cbf685b7d5a26f87131069da286bf10fc9fbf7fc968d169d48a45d689/fastapi-0.131.0.tar.gz", hash = "sha256:6531155e52bee2899a932c746c9a8250f210e3c3303a5f7b9f8a808bfe0548ff", size = 369612, upload-time = "2026-02-22T16:38:11.252Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/24/58/a2c4f6b240eeb148fb88cdac48f50a194aba760c1ca4988c6031c66a20ee/fastapi-0.128.6-py3-none-any.whl", hash = "sha256:bb1c1ef87d6086a7132d0ab60869d6f1ee67283b20fbf84ec0003bd335099509", size = 103674, upload-time = "2026-02-09T17:27:02.355Z" },
+    { url = "https://files.pythonhosted.org/packages/ff/94/b58ec24c321acc2ad1327f69b033cadc005e0f26df9a73828c9e9c7db7ce/fastapi-0.131.0-py3-none-any.whl", hash = "sha256:ed0e53decccf4459de78837ce1b867cd04fa9ce4579497b842579755d20b405a", size = 103854, upload-time = "2026-02-22T16:38:09.814Z" },
 ]
 
 [[package]]
@@ -743,7 +743,7 @@ requires-dist = [
     { name = "clerk-backend-api", specifier = "==4.2.0" },
     { name = "coverage", extras = ["toml"], marker = "extra == 'dev'", specifier = "==7.13.4" },
     { name = "cryptography", specifier = "==45.0.7" },
-    { name = "fastapi", specifier = "==0.128.6" },
+    { name = "fastapi", specifier = "==0.131.0" },
     { name = "fastapi-pagination", specifier = "==0.15.10" },
     { name = "flake8", marker = "extra == 'dev'", specifier = "==7.3.0" },
     { name = "httpx", marker = "extra == 'dev'", specifier = "==0.28.1" },