diff --git a/science/hepmc3/Makefile b/science/hepmc3/Makefile
index 01b1a4de4094..02dd17a3a575 100644
--- a/science/hepmc3/Makefile
+++ b/science/hepmc3/Makefile
@@ -1,20 +1,22 @@
 PORTNAME=	hepmc3
-DISTVERSION=	3.3.0
+DISTVERSION=	3.3.1
 CATEGORIES=	science
 MASTER_SITES=	https://hepmc.web.cern.ch/hepmc/releases/
 DISTNAME=	HepMC3-${DISTVERSION}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Event record for High Energy Physics Monte Carlo generators/simulation
 WWW=		https://hepmc.web.cern.ch/hepmc/
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 USES=		cmake:testing compiler:c++11-lang
 USE_LDCONFIG=	yes
 
 CMAKE_OFF=	HEPMC3_ENABLE_PYTHON HEPMC3_BUILD_STATIC_LIBS HEPMC3_ENABLE_ROOTIO HEPMC3_INSTALL_EXAMPLES
 CMAKE_TESTING_ON=	HEPMC3_ENABLE_TEST
 
+# tests as of 3.3.1: 100% tests passed, 0 tests failed out of 33
+
 .include <bsd.port.mk>
diff --git a/science/hepmc3/distinfo b/science/hepmc3/distinfo
index 7f5037bba9a0..55955e4b6966 100644
--- a/science/hepmc3/distinfo
+++ b/science/hepmc3/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1718930115
-SHA256 (HepMC3-3.3.0.tar.gz) = 6f876091edcf7ee6d0c0db04e080056e89efc1a61abe62355d97ce8e735769d6
-SIZE (HepMC3-3.3.0.tar.gz) = 9341637
+TIMESTAMP = 1783470448
+SHA256 (HepMC3-3.3.1.tar.gz) = 08240160b0f28dc3293aa4d61ce65e2d67cd597acf6faca439f2e46625f7e793
+SIZE (HepMC3-3.3.1.tar.gz) = 9354477