diff --git a/math/py-moarchiving/Makefile b/math/py-moarchiving/Makefile
index 40c60fb5e2a7..e81d13dbd0b9 100644
--- a/math/py-moarchiving/Makefile
+++ b/math/py-moarchiving/Makefile
@@ -16,4 +16,9 @@ USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
 
+OPTIONS_DEFINE=	ARBITRARY_PRECISION
+ARBITRARY_PRECISION_DESC=	Arbitrary precision hypervolume computation support
+
+ARBITRARY_PRECISION_RUN_DEPENDS=${PYTHON_PKGNAMEPREFIX}fraction>=0:math/py-fraction@${PY_FLAVOR}
+
 .include <bsd.port.mk>