diff --git a/pyproject.toml b/pyproject.toml
index 2cc522e..856882b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,4 +1,4 @@
-E[build-system]
+[build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"