diff --git a/dev-python/atomicwrites/atomicwrites-1.3.0.ebuild b/dev-python/atomicwrites/atomicwrites-1.3.0.ebuild
index f6db22435cfd3..714f4693765fe 100644
--- a/dev-python/atomicwrites/atomicwrites-1.3.0.ebuild
+++ b/dev-python/atomicwrites/atomicwrites-1.3.0.ebuild
@@ -14,7 +14,12 @@ LICENSE="MIT"
 SLOT="0"
 KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~mips ppc ppc64 sparc x86 ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
 
-BDEPEND="dev-python/setuptools[${PYTHON_USEDEP}]"
+BDEPEND="
+	test? (
+		$(python_gen_cond_dep '
+			dev-python/mock[${PYTHON_USEDEP}]
+		' -2)
+	)"
 
 distutils_enable_tests pytest
 distutils_enable_sphinx docs \