We have no zttp packaged (yet).

--- uvicorn-0.52.1/pyproject.toml.orig
+++ uvicorn-0.52.1/pyproject.toml
@@ -58,7 +58,6 @@
     "httpx==0.28.1",
     "anyio",
     # Explicit optionals,
-    "zttp==0.0.20; python_version >= '3.12'",
 ]
 docs = [
     "zensical==0.0.43",