diff --git a/textproc/py-pygtail/Makefile b/textproc/py-pygtail/Makefile
index af83a735e14b..996bc6ecd099 100644
--- a/textproc/py-pygtail/Makefile
+++ b/textproc/py-pygtail/Makefile
@@ -11,6 +11,6 @@ MAINTAINER=	demon@FreeBSD.org
 COMMENT=	Python module which reads log file lines that have not been read
 
 USES=		python
-USE_PYTHON=	autoplist distutils
+USE_PYTHON=	autoplist concurrent distutils
 
 .include <bsd.port.mk>