diff --git a/pyproject.toml b/pyproject.toml
index eed4a09..6c23165 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,8 @@ Tracker = "https://github.com/Textualize/py-tree-sitter-languages/issues"
 
 [build-system]
 requires = [
-    "setuptools>=42",
+    "setuptools",
+    "wheel",
     "Cython",
 ]
 build-backend = "setuptools.build_meta"
@@ -35,8 +36,5 @@ build-backend = "setuptools.build_meta"
 packages = ["tree_sitter_languages"]
 package-data = {"tree_sitter_languages" = ["languages.so", "languages.dll"]}
 
-[tool.setuptools.ext_modules]
-tree_sitter_languages = {sources = ["tree_sitter_languages/core.pyx"]}
-
 [tool.cython]
 language_level = "3"
\ No newline at end of file