diff --git a/devel/py-pyTooling/Makefile b/devel/py-pyTooling/Makefile
index 136d9ddf2bd9..0e359944e0ea 100644
--- a/devel/py-pyTooling/Makefile
+++ b/devel/py-pyTooling/Makefile
@@ -1,36 +1,37 @@
 PORTNAME=	pyTooling
 DISTVERSIONPREFIX=	v
 DISTVERSION=	4.0.1
 CATEGORIES=	devel
 #MASTER_SITES=	PYPI # requirements.txt is missing
 eKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Collection of arbitrary classes, decorators, meta-classes, exceptions
 WWW=		https://pytooling.github.io/pyTooling/
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 
 BUILD_DEPENDS=	${PY_SETUPTOOLS} \
 		${PYTHON_PKGNAMEPREFIX}wheel>=0.38.1:devel/py-wheel@${PY_FLAVOR}
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}anytree>=2.8.0:devel/py-anytree@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}coverage>0:devel/py-coverage@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}itertree>0:devel/py-itertree@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}lxml>=4.9:devel/py-lxml@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}mypy>=0.990:devel/py-mypy@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}networkx>=2.6:math/py-networkx@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pytest-benchmark>=4.0.0:devel/py-pytest-benchmark@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}python-igraph>0:math/py-python-igraph@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pytest-cov>0:devel/py-pytest-cov@${PY_FLAVOR} \
-		${PYTHON_PKGNAMEPREFIX}ruamel.yaml>=0.17:devel/py-ruamel.yaml@${PY_FLAVOR}
+		${PYTHON_PKGNAMEPREFIX}ruamel.yaml>=0.17:devel/py-ruamel.yaml@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}treelib>0:devel/py-treelib@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	pep517 autoplist pytest
 USE_GITHUB=	yes
 
 NO_ARCH=	yes
 
 TEST_WRKSRC=	${WRKSRC}/tests
 
 .include <bsd.port.mk>