diff --git a/go.mod b/go.mod
index 8aa39aa..892752f 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/muesli/reflow
 
 go 1.13
 
-require github.com/mattn/go-runewidth v0.0.14
+require github.com/mattn/go-runewidth v0.0.15
diff --git a/go.sum b/go.sum
index 2579e19..9d3d381 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,4 @@
-github.com/mattn/go-runewidth v0.0.14 h1:+xnbZSEeDbOIg5/mE6JF0w6n9duR1l3/WmbinWVwUuU=
-github.com/mattn/go-runewidth v0.0.14/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=