diff --git a/devel/libantlr4/Makefile b/devel/libantlr4/Makefile
index e6fd9d8e739f..608a44550e3a 100644
--- a/devel/libantlr4/Makefile
+++ b/devel/libantlr4/Makefile
@@ -1,23 +1,23 @@
 # Created by: Muhammad Moinur Rahman<5u623l20@gmail.com>
 
 PORTNAME=	antlr4
-PORTVERSION=	4.9
+PORTVERSION=	4.9.1
 DISTVERSIONPREFIX=	cpp-runtime-
 DISTVERSIONSUFFIX=	-source
 CATEGORIES=	devel
 MASTER_SITES=	http://www.antlr.org/download/
 PKGNAMEPREFIX=		lib
 
 MAINTAINER=	fluffy@FreeBSD.org
 COMMENT=	ANother Tool for Language Recognition (C runtime)
 
 LICENSE=	BSD3CLAUSE
 
 USES=		cmake compiler:c11 zip
 NO_WRKSUBDIR=	yes
 
 DOCSDIR=	${PREFIX}/share/doc/${PKGNAMEPREFIX}${PORTNAME}
-LIBVERSION=	4.9
+LIBVERSION=	${PORTVERSION}
 PLIST_SUB+=	LIBVERSION=${PORTVERSION}
 
 .include <bsd.port.mk>
diff --git a/devel/libantlr4/distinfo b/devel/libantlr4/distinfo
index 03b750084e37..188b43adcafc 100644
--- a/devel/libantlr4/distinfo
+++ b/devel/libantlr4/distinfo
@@ -1,5 +1,3 @@
-TIMESTAMP = 1606384483
-SHA256 (antlr4-cpp-runtime-4.9-source.zip) = 1055533089015f0837535a0126708678eb1212a80c70f42d8c4ce467d351cb7f
-SIZE (antlr4-cpp-runtime-4.9-source.zip) = 670109
-SHA256 (v3.1.1.zip) = b617897aecd29f4964e5b9a88c82bf238de4f6518651704d5eb07f24cbed5bf7
-SIZE (v3.1.1.zip) = 37070
+TIMESTAMP = 1629116842
+SHA256 (antlr4-cpp-runtime-4.9.1-source.zip) = 21647f9d5c55d13f2297e3f61e5dd68283e439983c27bd899f9c8a725bbea7b5
+SIZE (antlr4-cpp-runtime-4.9.1-source.zip) = 670184