diff --git a/dev-python/os-xenapi/os-xenapi-0.3.4-r2.ebuild b/dev-python/os-xenapi/os-xenapi-0.3.4-r2.ebuild
index ed2fff781f..ac25651db3 100644
--- a/dev-python/os-xenapi/os-xenapi-0.3.4-r2.ebuild
+++ b/dev-python/os-xenapi/os-xenapi-0.3.4-r2.ebuild
@@ -42,6 +42,8 @@ DEPEND="
 		>=dev-python/testscenarios-0.4[${PYTHON_USEDEP}]
 		>=dev-python/testtools-2.2.0[${PYTHON_USEDEP}]
 		>=dev-python/reno-2.5.0[${PYTHON_USEDEP}]
+
+		dev-python/mock[${PYTHON_USEDEP}]
 	)
 "