diff --git a/pyproject.toml b/pyproject.toml
index d6f035d..aa61187 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 # Keep the isolated build backend on a metadata-2.4-compatible hatchling line.
 # Newer hatchling releases can emit Core Metadata 2.5, which current CI's
 # `twine check` rejects as an invalid distribution metadata version.
-requires = ["hatchling<1.27"]
+requires = ["hatchling<1.33"]
 build-backend = "hatchling.build"
 
 [project]