diff --git a/dev-python/yarl/yarl-1.7.2-r3.ebuild b/dev-python/yarl/yarl-1.7.2-r3.ebuild
index 49b6b1477943e..31134e3b9c363 100644
--- a/dev-python/yarl/yarl-1.7.2-r3.ebuild
+++ b/dev-python/yarl/yarl-1.7.2-r3.ebuild
@@ -26,6 +26,9 @@ RDEPEND="
 	>=dev-python/multidict-4.0[${PYTHON_USEDEP}]
 	>=dev-python/idna-2.0[${PYTHON_USEDEP}]
 "
+BDEPEND="
+	dev-python/cython[${PYTHON_USEDEP}]
+"
 
 distutils_enable_tests pytest
 distutils_enable_sphinx docs \