diff --git a/dev-python/black/black-21.6_beta0.ebuild b/dev-python/black/black-21.6_beta0.ebuild
index 0675c52604d40..43103259dffc8 100644
--- a/dev-python/black/black-21.6_beta0.ebuild
+++ b/dev-python/black/black-21.6_beta0.ebuild
@@ -46,6 +46,7 @@ export SETUPTOOLS_SCM_PRETEND_VERSION=${MY_PV}
 
 python_test() {
 	cp "${S}"/src/black_primer/primer.json "${BUILD_DIR}"/lib/black_primer/primer.json || die
+	distutils_install_for_testing
 	epytest -m "not python2"
 }
 
diff --git a/dev-python/black/black-21.7_beta0.ebuild b/dev-python/black/black-21.7_beta0.ebuild
index 90c10c9ed7aa6..290023b3cca2e 100644
--- a/dev-python/black/black-21.7_beta0.ebuild
+++ b/dev-python/black/black-21.7_beta0.ebuild
@@ -42,6 +42,7 @@ export SETUPTOOLS_SCM_PRETEND_VERSION=${MY_PV}
 
 python_test() {
 	cp "${S}"/src/black_primer/primer.json "${BUILD_DIR}"/lib/black_primer/primer.json || die
+	distutils_install_for_testing
 	epytest -m "not python2"
 }