diff --git a/devel/py-parsing/Makefile b/devel/py-parsing/Makefile
index 33b5f1276b71..7979ed6684a1 100644
--- a/devel/py-parsing/Makefile
+++ b/devel/py-parsing/Makefile
@@ -13,7 +13,7 @@ COMMENT=	General parsing module for Python
 
 LICENSE=	MIT
 
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 USES=		python
 
 .include <bsd.port.mk>