diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index b1a96720..33f35072 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -112,7 +112,7 @@ dependencies = [
     "tomli==2.0.2",
     "typing_extensions==4.12.2",
     "urllib3==2.6.3",
-    "uvicorn==0.34.2",
+    "uvicorn==0.40.0",
     "websocket-client==1.8.0",
     "Werkzeug==3.1.5",
     "wrapt==1.16.0",
diff --git a/backend/uv.lock b/backend/uv.lock
index 7a8464c6..52d9d9a7 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -1294,7 +1294,7 @@ requires-dist = [
     { name = "tomli", specifier = "==2.0.2" },
     { name = "typing-extensions", specifier = "==4.12.2" },
     { name = "urllib3", specifier = "==2.6.3" },
-    { name = "uvicorn", specifier = "==0.34.2" },
+    { name = "uvicorn", specifier = "==0.40.0" },
     { name = "websocket-client", specifier = "==1.8.0" },
     { name = "werkzeug", specifier = "==3.1.5" },
     { name = "wrapt", specifier = "==1.16.0" },
@@ -3020,15 +3020,15 @@ wheels = [
 
 [[package]]
 name = "uvicorn"
-version = "0.34.2"
+version = "0.40.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "click" },
     { name = "h11" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/a6/ae/9bbb19b9e1c450cf9ecaef06463e40234d98d95bf572fab11b4f19ae5ded/uvicorn-0.34.2.tar.gz", hash = "sha256:0e929828f6186353a80b58ea719861d2629d766293b6d19baf086ba31d4f3328", size = 76815, upload-time = "2025-04-19T06:02:50.101Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/c3/d1/8f3c683c9561a4e6689dd3b1d345c815f10f86acd044ee1fb9a4dcd0b8c5/uvicorn-0.40.0.tar.gz", hash = "sha256:839676675e87e73694518b5574fd0f24c9d97b46bea16df7b8c05ea1a51071ea", size = 81761, upload-time = "2025-12-21T14:16:22.45Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/b1/4b/4cef6ce21a2aaca9d852a6e84ef4f135d99fcd74fa75105e2fc0c8308acd/uvicorn-0.34.2-py3-none-any.whl", hash = "sha256:deb49af569084536d269fe0a6d67e3754f104cf03aba7c11c40f01aadf33c403", size = 62483, upload-time = "2025-04-19T06:02:48.42Z" },
+    { url = "https://files.pythonhosted.org/packages/3d/d8/2083a1daa7439a66f3a48589a57d576aa117726762618f6bb09fe3798796/uvicorn-0.40.0-py3-none-any.whl", hash = "sha256:c6c8f55bc8bf13eb6fa9ff87ad62308bbbc33d0b67f84293151efe87e0d5f2ee", size = 68502, upload-time = "2025-12-21T14:16:21.041Z" },
 ]
 
 [[package]]