diff -ruN liblz4.orig/Makefile liblz4/Makefile
--- liblz4.orig/Makefile	2019-02-14 14:49:18.000000000 +0000
+++ liblz4/Makefile	2019-04-24 09:27:40.071609000 +0000
@@ -2,7 +2,7 @@
 # $FreeBSD: head/archivers/liblz4/Makefile 492921 2019-02-14 14:49:18Z olivier $
 
 PORTNAME=	lz4
-PORTVERSION=	1.8.3
+PORTVERSION=	1.9.1
 DISTVERSIONPREFIX=	v
 PORTEPOCH=	1
 CATEGORIES=	archivers
diff -ruN liblz4.orig/distinfo liblz4/distinfo
--- liblz4.orig/distinfo	2018-09-18 15:09:10.000000000 +0000
+++ liblz4/distinfo	2019-04-24 09:27:44.767704000 +0000
@@ -1,3 +1,3 @@
-TIMESTAMP = 1536744645
-SHA256 (lz4-lz4-v1.8.3_GH0.tar.gz) = 33af5936ac06536805f9745e0b6d61da606a1f8b4cc5c04dd3cbaca3b9b4fc43
-SIZE (lz4-lz4-v1.8.3_GH0.tar.gz) = 327897
+TIMESTAMP = 1556098064
+SHA256 (lz4-lz4-v1.9.1_GH0.tar.gz) = f8377c89dad5c9f266edc0be9b73595296ecafd5bfa1000de148096c50052dc4
+SIZE (lz4-lz4-v1.9.1_GH0.tar.gz) = 285336