diff --git a/engine/pyproject.toml b/engine/pyproject.toml
index 87e7cc99c0..8071f45bab 100644
--- a/engine/pyproject.toml
+++ b/engine/pyproject.toml
@@ -21,7 +21,7 @@ engine = [
     "pydantic-settings>=2.15.0",
     "python-dotenv>=1.2.2",
     "sqlite-vec>=0.1.9",
-    "uvicorn>=0.52.1",
+    "uvicorn>=0.52.3",
 ]
 # Type checking, testing, model generation, and formatting tools for the engine.
 engine-dev = [
diff --git a/engine/uv.lock b/engine/uv.lock
index fbfa665bc6..85162cdb5f 100644
--- a/engine/uv.lock
+++ b/engine/uv.lock
@@ -707,7 +707,7 @@ engine = [
     { name = "pydantic-settings", specifier = ">=2.15.0" },
     { name = "python-dotenv", specifier = ">=1.2.2" },
     { name = "sqlite-vec", specifier = ">=0.1.9" },
-    { name = "uvicorn", specifier = ">=0.52.1" },
+    { name = "uvicorn", specifier = ">=0.52.3" },
 ]
 engine-dev = [
     { name = "anyio", specifier = ">=4.14.2" },
@@ -3188,15 +3188,15 @@ wheels = [
 
 [[package]]
 name = "uvicorn"
-version = "0.52.1"
+version = "0.52.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "click" },
     { name = "h11" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/03/18/ccce41535dee1be77735592bd19965f3972c82e07ee703d324709496b716/uvicorn-0.52.1.tar.gz", hash = "sha256:112ec661814189acbccd3f7b86460147cc065fc92c0821afa78918780e4354dd", size = 100571, upload-time = "2026-08-01T18:19:30.732Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/2e/28/64ca011edf31c715b4fad359c587ea52391aaffa125065695590241ff617/uvicorn-0.52.3.tar.gz", hash = "sha256:18857b9e6579300be55c91c0a1cfd37d9a2cf0cabea33b88275f199eb73b8b58", size = 100621, upload-time = "2026-08-13T16:50:02.899Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/c7/d5/68e6e9bca63c0badf67002890a46d3784c958de45b65e1275ec583ca1f06/uvicorn-0.52.1-py3-none-any.whl", hash = "sha256:e4403f9d93188cf9d1088e9f40e3acd12630e2df8675316704379a7fc20fff6a", size = 79859, upload-time = "2026-08-01T18:19:29.294Z" },
+    { url = "https://files.pythonhosted.org/packages/dc/2b/ebd108734a8204c6b4b93c681c9a38c5273b3ccd5d129fee4ffc1d97772c/uvicorn-0.52.3-py3-none-any.whl", hash = "sha256:116af2710dbf47c80f463cd20ee4884b6662f4c9f227d797ddc7279d2fcc2c7c", size = 79859, upload-time = "2026-08-13T16:50:01.323Z" },
 ]
 
 [[package]]