diff --git a/math/gnuplot/Makefile b/math/gnuplot/Makefile
index cecdedf6e2be..ce410783e67f 100644
--- a/math/gnuplot/Makefile
+++ b/math/gnuplot/Makefile
@@ -1,8 +1,7 @@
 # $FreeBSD$
 
 PORTNAME=	gnuplot
-PORTVERSION=	4.6.5
-PORTREVISION=	6
+PORTVERSION=	4.6.6
 CATEGORIES=	math graphics
 MASTER_SITES=	SF
 
diff --git a/math/gnuplot/distinfo b/math/gnuplot/distinfo
index a7548aa85363..efcfdf4c9fb2 100644
--- a/math/gnuplot/distinfo
+++ b/math/gnuplot/distinfo
@@ -1,2 +1,2 @@
-SHA256 (gnuplot-4.6.5.tar.gz) = e550f030c7d04570e89c3d4e3f6e82296816508419c86ab46c4dd73156519a2d
-SIZE (gnuplot-4.6.5.tar.gz) = 5035657
+SHA256 (gnuplot-4.6.6.tar.gz) = 1f19596fd09045f22225afbfec11fa91b9ad1d95b9f48406362f517d4f130274
+SIZE (gnuplot-4.6.6.tar.gz) = 5059214