diff --git a/dev-python/cffi/cffi-1.5.0.ebuild b/dev-python/cffi/cffi-1.5.0.ebuild
index 3220cf9234a2d..c54b5e66ab4ce 100644
--- a/dev-python/cffi/cffi-1.5.0.ebuild
+++ b/dev-python/cffi/cffi-1.5.0.ebuild
@@ -23,6 +23,7 @@ RDEPEND="
 	virtual/libffi
 	dev-python/pycparser[${PYTHON_USEDEP}]"
 DEPEND="${RDEPEND}
+	doc? ( dev-python/sphinx[${PYTHON_USEDEP}] )
 	test? (	dev-python/pytest[${PYTHON_USEDEP}] )"
 
 # Avoid race on _configtest.c (distutils/command/config.py:_gen_temp_sourcefile)