Index: Makefile
===================================================================
--- Makefile    (revision 519078)
+++ Makefile    (working copy)
@@ -2,7 +2,7 @@
 # $FreeBSD$

 PORTNAME=      libzfs
-PORTVERSION=   1.0.20181220
+PORTVERSION=   1.0.20190402
 CATEGORIES=    devel python
 PKGNAMEPREFIX= ${PYTHON_PKGNAMEPREFIX}

@@ -17,18 +17,15 @@

 RUN_DEPENDS=   ${PY_ENUM34}

+USES=          python
+
+USE_PYTHON=    autoplist distutils cython
+
 USE_GITHUB=     yes
 GH_ACCOUNT=    freenas
 GH_PROJECT=    py-libzfs
-GH_TAGNAME=    3362fd4
+GH_TAGNAME=    383afa0

-HAS_CONFIGURE= yes
-USES=          python
-USE_PYTHON=    autoplist distutils cython
-
-CONFIGURE_ENV= FREEBSD_SRC=${SRC_BASE}
-MAKE_ENV=      FREEBSD_SRC=${SRC_BASE}
-
 .include <bsd.port.options.mk>

 .if !exists(${SRC_BASE}/sys/Makefile)
@@ -35,4 +32,6 @@
 IGNORE=        requires kernel source files in ${SRC_BASE}
 .endif

+WRKSRC=                ${WRKDIR}/${GH_PROJECT}-${GH_TAGNAME}
+
 .include <bsd.port.mk>
Index: distinfo
===================================================================
--- distinfo    (revision 519078)
+++ distinfo    (working copy)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1545299995
-SHA256 (freenas-py-libzfs-1.0.20181220-3362fd4_GH0.tar.gz) = 247de9a6ac7460fe05e86fea56910ce53a648415e43870168299bedc3e7ab9a3
-SIZE (freenas-py-libzfs-1.0.20181220-3362fd4_GH0.tar.gz) = 69930
+TIMESTAMP = 1575414306
+SHA256 (freenas-py-libzfs-1.0.20190402-383afa0_GH0.tar.gz) = b951f6900bb10dcee96ae1b875f6b01f01ee7e3d0d9a9126fa6a23b44756b20e
+SIZE (freenas-py-libzfs-1.0.20190402-383afa0_GH0.tar.gz) = 30541