diff --git a/dev-python/psautohint/psautohint-2.4.0-r1.ebuild b/dev-python/psautohint/psautohint-2.4.0-r1.ebuild
index 35d0793850..6ba7193b6a 100644
--- a/dev-python/psautohint/psautohint-2.4.0-r1.ebuild
+++ b/dev-python/psautohint/psautohint-2.4.0-r1.ebuild
@@ -5,6 +5,7 @@ EAPI=8
 
 PYTHON_COMPAT=( python3_{10..11} )
 DISTUTILS_USE_PEP517=setuptools
+DISTUTILS_EXT=1
 inherit meson distutils-r1
 
 COMMIT="1e4c5061d328105c4dcfcb6fdbc27ec49b3e9d23"