diff --git a/dev-python/jupyter_core/jupyter_core-4.6.3.ebuild b/dev-python/jupyter_core/jupyter_core-4.6.3.ebuild
index 400c9ac6d2d6d..2a9d58b8c6d0b 100644
--- a/dev-python/jupyter_core/jupyter_core-4.6.3.ebuild
+++ b/dev-python/jupyter_core/jupyter_core-4.6.3.ebuild
@@ -18,17 +18,20 @@ KEYWORDS="amd64 arm64 x86"
 
 RDEPEND="dev-python/traitlets[${PYTHON_USEDEP}]"
 BDEPEND="
-	test? ( >=dev-python/ipython-4.0.1[${PYTHON_USEDEP}] )"
+	test? (
+		>=dev-python/ipython-4.0.1[${PYTHON_USEDEP}]
+		dev-python/nose[${PYTHON_USEDEP}]
+	)"
 
 distutils_enable_sphinx docs \
 	dev-python/sphinxcontrib-github-alt
 distutils_enable_tests pytest
 
-src_prepare() {
+python_prepare_all() {
 	# rely on imports working without PYTHONPATH
 	sed -e 's:test_not_on_path:_&:' \
 		-e 's:test_path_priority:_&:' \
 		-i jupyter_core/tests/test_command.py || die
 
-	distutils-r1_src_prepare
+	distutils-r1_python_prepare_all
 }