Index: head/math/exprtk/Makefile
===================================================================
--- head/math/exprtk/Makefile	(revision 538554)
+++ head/math/exprtk/Makefile	(revision 538555)
@@ -1,27 +1,27 @@
 # $FreeBSD$
 
 PORTNAME=	exprtk
-DISTVERSION=	g20191103
+DISTVERSION=	g20200510
 CATEGORIES=	math
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ mathematical expression library
 
 LICENSE=	MIT
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	ArashPartow
-GH_TAGNAME=	dd02674
+GH_TAGNAME=	d81ac1a2ddd9877a7981d32c731fd9a75544ec68
 
 NO_BUILD=	yes
 NO_ARCH=	yes
 
 PLIST_FILES=	include/exprtk.hpp
 
 do-install:
 	${INSTALL_DATA} ${WRKSRC}/exprtk.hpp ${STAGEDIR}${PREFIX}/include
 
 benchmark:
 	cd ${WRKSRC} && ${MAKE_ENV} ${MAKE} ${MAKE_ARGS} pgo
 
 .include <bsd.port.mk>
Index: head/math/exprtk/distinfo
===================================================================
--- head/math/exprtk/distinfo	(revision 538554)
+++ head/math/exprtk/distinfo	(revision 538555)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1572807909
-SHA256 (ArashPartow-exprtk-g20191103-dd02674_GH0.tar.gz) = df6dcb1b8a6ef7d77ede360be0d2f154608d969854ee9509bdba770b82481b84
-SIZE (ArashPartow-exprtk-g20191103-dd02674_GH0.tar.gz) = 1317908
+TIMESTAMP = 1591918020
+SHA256 (ArashPartow-exprtk-g20200510-d81ac1a2ddd9877a7981d32c731fd9a75544ec68_GH0.tar.gz) = 895e1a4fc15b9875d49d49a6dcd7e531c5b118b14fc9a063bea2434dedafd285
+SIZE (ArashPartow-exprtk-g20200510-d81ac1a2ddd9877a7981d32c731fd9a75544ec68_GH0.tar.gz) = 1317610