diff --git a/science/smoldyn/Makefile b/science/smoldyn/Makefile
index aaad98941315..1d42a799f553 100644
--- a/science/smoldyn/Makefile
+++ b/science/smoldyn/Makefile
@@ -1,29 +1,28 @@
 PORTNAME=	smoldyn
-DISTVERSION=	2.65
-PORTREVISION=	1
+DISTVERSION=	2.66
 CATEGORIES=	science
 MASTER_SITES=	http://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
 USE_GL=		gl glu glut
 USE_XORG=	xi xmu
 USE_LDCONFIG=	yes
 
 CMAKE_OFF=	OPTION_PYTHON
 
 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 aad23c1df1f6..95814750adc8 100644
--- a/science/smoldyn/distinfo
+++ b/science/smoldyn/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1623284468
-SHA256 (smoldyn-2.65.tgz) = 63410947b608988985c20fada61ab789f1253a913530dc41f87b8708d3dd16b6
-SIZE (smoldyn-2.65.tgz) = 30399811
+TIMESTAMP = 1624211519
+SHA256 (smoldyn-2.66.tgz) = 36b862afc0824610431efb2e298f3c88637caed442fbb8f0ba621b4225824ac4
+SIZE (smoldyn-2.66.tgz) = 30581336