diff --git a/backend/requirements.txt b/backend/requirements.txt
index e36217a..4722f01 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,6 +1,6 @@
 # Web framework — starlette pulled transitively; floor raised to patched releases.
 fastapi>=0.115.6
-uvicorn[standard]>=0.30.6
+uvicorn[standard]>=0.51.0
 # python-multipart < 0.0.18 has a DoS CVE (GHSA-2jv5-9r88-3w3p / 59gj).
 python-multipart>=0.0.32
 youtube-transcript-api>=1.2.4