diff --git a/app-crypt/acme/acme-9999.ebuild b/app-crypt/acme/acme-9999.ebuild
index b02dbde82a946..3a1dd1461249c 100644
--- a/app-crypt/acme/acme-9999.ebuild
+++ b/app-crypt/acme/acme-9999.ebuild
@@ -25,6 +25,7 @@ IUSE="test"
 
 RDEPEND="
 	>=dev-python/cryptography-0.8[${PYTHON_USEDEP}]
+	>=dev-python/josepy-1.0.0[${PYTHON_USEDEP}]
 	dev-python/mock[${PYTHON_USEDEP}]
 	>=dev-python/pyopenssl-0.13[${PYTHON_USEDEP}]
 	dev-python/pyrfc3339[${PYTHON_USEDEP}]