diff --git a/src/pyproject.toml.m4 b/src/pyproject.toml.m4
index 084c5a45ead..7406c7ff359 100644
--- a/src/pyproject.toml.m4
+++ b/src/pyproject.toml.m4
@@ -2,9 +2,6 @@
 # Minimum requirements for the build system to execute.
 requires = [
     "sage_setup[autogen]",
-    # Some version of sage-conf is required.
-    # Note that PEP517/518 have no notion of optional sage_spkg dependencies:
-    # https://github.com/pypa/pip/issues/6144
      esyscmd(`sage-get-system-packages install-requires-toml \
         setuptools \
         wheel          \