diff --git a/go.mod b/go.mod
index 8fd5aaf..54cf3e2 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,7 @@ module github.com/galaco/bsp
 
 go 1.12
 
-require github.com/go-gl/mathgl v0.0.0-20190713194549-592312d8590a
+require (
+	github.com/go-gl/mathgl v0.0.0-20190713194549-592312d8590a
+	golang.org/x/image v0.0.0-20190910094157-69e4b8554b2a // indirect
+)
diff --git a/go.sum b/go.sum
index 88de09d..fce347d 100644
--- a/go.sum
+++ b/go.sum
@@ -1,6 +1,7 @@
-
 github.com/go-gl/mathgl v0.0.0-20190713194549-592312d8590a h1:yoAEv7yeWqfL/l9A/J5QOndXIJCldv+uuQB1DSNQbS0=
 github.com/go-gl/mathgl v0.0.0-20190713194549-592312d8590a/go.mod h1:yhpkQzEiH9yPyxDUGzkmgScbaBVlhC06qodikEM0ZwQ=
 golang.org/x/image v0.0.0-20190321063152-3fc05d484e9f h1:FO4MZ3N56GnxbqxGKqh+YTzUWQ2sDwtFQEZgLOxh9Jc=
 golang.org/x/image v0.0.0-20190321063152-3fc05d484e9f/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
+golang.org/x/image v0.0.0-20190910094157-69e4b8554b2a h1:gHevYm0pO4QUbwy8Dmdr01R5r1BuKtfYqRqF0h/Cbh0=
+golang.org/x/image v0.0.0-20190910094157-69e4b8554b2a/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=