Index: Makefile
===================================================================
--- Makefile	(revision 539731)
+++ Makefile	(working copy)
@@ -16,11 +16,11 @@
 		${PYTHON_PKGNAMEPREFIX}decorator>=4.0.10:devel/py-decorator@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}kitchen>=1.2.4:devel/py-kitchen@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}mailcap_fix>=0.1.3:devel/py-mailcap-fix@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}requests>=2.11.0:www/py-requests@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}requests>=2.4.0:www/py-requests@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}six>=1.10.0:devel/py-six@${PY_FLAVOR}
 
 USES=		python:3.6+
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes