diff --git a/math/octave-forge-tsa/Makefile b/math/octave-forge-tsa/Makefile
index 02aa96173d07..71f92d555fff 100644
--- a/math/octave-forge-tsa/Makefile
+++ b/math/octave-forge-tsa/Makefile
@@ -2,8 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	octave-forge-tsa
-PORTVERSION=	4.4.1
-PORTREVISION=	2
+PORTVERSION=	4.4.5
 CATEGORIES=	math
 
 MAINTAINER=	stephen@FreeBSD.org
@@ -14,10 +13,12 @@ LICENSE_FILE=	${WRKDIR}/${OCTSRC}/COPYING
 
 # OCTSRC is the name of the directory of the package.
 # It is usually ${OCTAVE_PKGNAME} or ${DISTNAME}.
-OCTSRC=		${OCTAVE_PKGNAME}
+OCTSRC=		${DISTNAME}
 
 WRKSRC=		${WRKDIR}/${OCTSRC}/src
 
+RUN_DEPENDS+=	${TARBALLS_DIR}/nan.tar.gz:math/octave-forge-nan
+
 .include "${.CURDIR}/../../Mk/bsd.octave.mk"
 
 ALL_TARGET=	octave
diff --git a/math/octave-forge-tsa/distinfo b/math/octave-forge-tsa/distinfo
index 9726b91889f7..a1aace275d05 100644
--- a/math/octave-forge-tsa/distinfo
+++ b/math/octave-forge-tsa/distinfo
@@ -1,2 +1,3 @@
-SHA256 (octave-forge/tsa-4.4.1.tar.gz) = d4d0053cd73b2633e24e80a61bb0b413c99b39a24b8f0daf8364843d1a47780d
-SIZE (octave-forge/tsa-4.4.1.tar.gz) = 94030
+TIMESTAMP = 1498102392
+SHA256 (octave-forge/tsa-4.4.5.tar.gz) = c9eb377fc9006e9764f3b152f7bd4725cb6025699bfab0d6a68f26fe2484d6ef
+SIZE (octave-forge/tsa-4.4.5.tar.gz) = 86494