diff --git a/pyproject.toml b/pyproject.toml
index bb5e83cb40b5871b321beb790ae14606b010e4ca..9787c3bdf008a57ae3cb2e27a8261eb3f134ff73 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools", "wheel", "bob.extension"]
+requires = ["setuptools", "wheel"]
 build-backend = "setuptools.build_meta"