diff --git a/go.mod b/go.mod
index 07dbb7fd5..ac8c82711 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/hajimehoshi/ebiten/v2
 
-go 1.21.1
+go 1.19
 
 require (
 	github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895
diff --git a/go.sum b/go.sum
index a111c4bd6..7131682fc 100644
--- a/go.sum
+++ b/go.sum
@@ -11,7 +11,6 @@ github.com/gen2brain/mpeg v0.3.2-0.20240412154320-a2ac4fc8a46f/go.mod h1:i/ebyRR
 github.com/go-text/typesetting v0.1.1 h1:bGAesCuo85nXnEN5LmFMVGAGpGkCPtHrZLi//qD7EJo=
 github.com/go-text/typesetting v0.1.1/go.mod h1:d22AnmeKq/on0HNv73UFriMKc4Ez6EqZAofLhAzpSzI=
 github.com/go-text/typesetting-utils v0.0.0-20231211103740-d9332ae51f04 h1:zBx+p/W2aQYtNuyZNcTfinWvXBQwYtDfme051PR/lAY=
-github.com/go-text/typesetting-utils v0.0.0-20231211103740-d9332ae51f04/go.mod h1:DDxDdQEnB70R8owOx3LVpEFvpMK9eeH1o2r0yZhFI9o=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/hajimehoshi/bitmapfont/v3 v3.2.0-alpha.3 h1:gSxacUXbVZcffXOHl/BWGvf61LpJYLoEaZlsiLlWXPk=