diff --git a/science/smoldyn/Makefile b/science/smoldyn/Makefile
index 1d42a799f553..6cbd944087a4 100644
--- a/science/smoldyn/Makefile
+++ b/science/smoldyn/Makefile
@@ -1,28 +1,29 @@
 PORTNAME=	smoldyn
-DISTVERSION=	2.66
+DISTVERSION=	2.67
 CATEGORIES=	science
-MASTER_SITES=	http://www.smoldyn.org/
+MASTER_SITES=	https://www.smoldyn.org/
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Biochemical simulator for molecular diffusion, surface interactions
 
 LICENSE=	LGPL3
 LICENSE_FILE=	${WRKSRC}/License.txt
 
 LIB_DEPENDS=	libtiff.so:graphics/tiff
 
-USES=		cmake compiler:c++11-lang gl tar:tgz xorg
+USES=		cmake:testing compiler:c++11-lang gl tar:tgz xorg
 USE_GL=		gl glu glut
 USE_XORG=	xi xmu
 USE_LDCONFIG=	yes
 
 CMAKE_OFF=	OPTION_PYTHON
+CMAKE_TESTING_ON=	OPTION_EXAMPLES # test code is missing from tarballs: https://github.com/ssandrews/Smoldyn/issues/111
 
 PLIST_FILES=	bin/${PORTNAME} \
 		include/libsmoldyn.h \
 		include/smoldyn.h \
 		include/smoldynconfigure.h \
 		lib/libsmoldyn_shared.so \
 		lib/libsmoldyn_static.a
 
 .include <bsd.port.mk>
diff --git a/science/smoldyn/distinfo b/science/smoldyn/distinfo
index 95814750adc8..f0d66a948acd 100644
--- a/science/smoldyn/distinfo
+++ b/science/smoldyn/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1624211519
-SHA256 (smoldyn-2.66.tgz) = 36b862afc0824610431efb2e298f3c88637caed442fbb8f0ba621b4225824ac4
-SIZE (smoldyn-2.66.tgz) = 30581336
+TIMESTAMP = 1636241174
+SHA256 (smoldyn-2.67.tgz) = 8511325fd606eec84dae748f711c0392b9ec824059101277ef22fee104e6072b
+SIZE (smoldyn-2.67.tgz) = 31336122
diff --git a/science/smoldyn/pkg-descr b/science/smoldyn/pkg-descr
index c25cbc82c478..427a23c68a02 100644
--- a/science/smoldyn/pkg-descr
+++ b/science/smoldyn/pkg-descr
@@ -1,15 +1,15 @@
 Smoldyn is a computer program for cell-scale biochemical simulations. It
 simulates each molecule of interest individually to capture natural
 stochasticity and to yield nanometer-scale spatial resolution. It treats other
 molecules implicitly, enabling it to simulate hundreds of thousands of molecules
 over several minutes of real time. Simulated molecules diffuse, react, are
 confined by surfaces, and bind to membranes much as they would in a real
 biological system.
 
 Smoldyn is easy to use and easy to install. It is more accurate and faster than
 other particle-based simulators. Smoldyn's unique features include:
 a "virtual experimenter" who can manipulate or measure the simulated system,
 support for spatial compartments, molecules with excluded volume, and
 simulations in 1, 2, or 3 dimensions.
 
-WWW: http://www.smoldyn.org/
+WWW: https://www.smoldyn.org/