diff --git a/math/octave-forge-io/Makefile b/math/octave-forge-io/Makefile
index 92e550a3b69f..9a4e5694753f 100644
--- a/math/octave-forge-io/Makefile
+++ b/math/octave-forge-io/Makefile
@@ -1,8 +1,7 @@
 # Created by: Stephen Montgomery-Smith <stephen@math.missouri.edu>
 
 PORTNAME=	octave-forge-io
-PORTVERSION=	2.6.3
-PORTREVISION=	2
+PORTVERSION=	2.6.4
 PORTEPOCH=	1
 CATEGORIES=	math
 
diff --git a/math/octave-forge-io/distinfo b/math/octave-forge-io/distinfo
index d3ed50a45cb3..b9e1b087e51b 100644
--- a/math/octave-forge-io/distinfo
+++ b/math/octave-forge-io/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1604340256
-SHA256 (octave-forge/io-2.6.3.tar.gz) = 6bc63c6498d79cada01a6c4446f793536e0bb416ddec2a5201dd8d741d459e10
-SIZE (octave-forge/io-2.6.3.tar.gz) = 228174
+TIMESTAMP = 1640915433
+SHA256 (octave-forge/io-2.6.4.tar.gz) = a74a400bbd19227f6c07c585892de879cd7ae52d820da1f69f1a3e3e89452f5a
+SIZE (octave-forge/io-2.6.4.tar.gz) = 233544