diff --git a/mail/py-aiosmtpd/Makefile b/mail/py-aiosmtpd/Makefile
index 4cb720d7b8ed..eb4654afc40d 100644
--- a/mail/py-aiosmtpd/Makefile
+++ b/mail/py-aiosmtpd/Makefile
@@ -9,7 +9,9 @@ COMMENT=	Asyncio based SMTP server
 
 LICENSE=	APACHE20
 
-RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}atpublic>=0:devel/py-atpublic@${PY_FLAVOR}
+RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}atpublic>=0:devel/py-atpublic@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}attrs>=0:devel/py-attrs@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}typing-extensions>=0:devel/py-typing-extensions@${PY_FLAVOR}
 
 USES=		python:3.5+
 USE_PYTHON=	autoplist distutils