diff --git a/pyproject.toml b/pyproject.toml
index d9ed7404dab948700380c2e6129caadb997bd27b..bb5e83cb40b5871b321beb790ae14606b010e4ca 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools", "wheel", "bob.extension", "bob.blitz", "bob.core"]
+requires = ["setuptools", "wheel", "bob.extension"]
 build-backend = "setuptools.build_meta"