diff --git a/go.mod b/go.mod
index 266a99f..8b7a9e2 100644
--- a/go.mod
+++ b/go.mod
@@ -1,15 +1,15 @@
 module github.com/s0rg/grid
 
-go 1.21
+go 1.21.5
 
 require (
 	github.com/s0rg/array2d v1.1.1
-	github.com/s0rg/set v1.0.1
-	github.com/s0rg/vec2d v1.1.1
+	github.com/s0rg/set v1.2.0
+	github.com/s0rg/vec2d v1.2.0
 	github.com/zyedidia/generic v1.2.1
 )
 
 require (
 	github.com/segmentio/fasthash v1.0.3 // indirect
-	golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63 // indirect
+	golang.org/x/exp v0.0.0-20231226003508-02704c960a9b // indirect
 )
diff --git a/go.sum b/go.sum
index 875535a..2eb1a88 100644
--- a/go.sum
+++ b/go.sum
@@ -1,12 +1,12 @@
 github.com/s0rg/array2d v1.1.1 h1:fPZDbolqx9P0gCaD9yFTZT0TcWa6o/gK4t0YnGRpp/0=
 github.com/s0rg/array2d v1.1.1/go.mod h1:XUVXpxRB1bSnngbrTAyfEcLl6GP+8OpyFLEkwvQOukI=
-github.com/s0rg/set v1.0.1 h1:eJ2KSRUwnIZOBtlQScgET80+jkm/ro01pn6YeZzgWp4=
-github.com/s0rg/set v1.0.1/go.mod h1:aBGSm+F2mCTDjNIRR4GMB04NMqZBhtSh0tOBe/u5z5k=
-github.com/s0rg/vec2d v1.1.1 h1:asdV+Iev4M5lcFwB46883k8oLku4JgNQHyI/4SHAtMo=
-github.com/s0rg/vec2d v1.1.1/go.mod h1:/0pgb+2ax3mWfBZ1gb9LMMFawvmGyWpgCjk8a/ImCgg=
+github.com/s0rg/set v1.2.0 h1:53b207YMktNQJXYei/oHuTR5oOO2e9+eieZOncYsh9g=
+github.com/s0rg/set v1.2.0/go.mod h1:xz3nDbjF4nyMLvAHvmE7rigXpNrKKTsi6iANznIB1/4=
+github.com/s0rg/vec2d v1.2.0 h1:ilCq4dWAZtPy+VFmyc4mUIxonXCeXxFDwE0o5Y48V5U=
+github.com/s0rg/vec2d v1.2.0/go.mod h1:+V8qlJQahzxDQ2gRs6b6JWBePp3z48CHYc5qO6Ciik8=
 github.com/segmentio/fasthash v1.0.3 h1:EI9+KE1EwvMLBWwjpRDc+fEM+prwxDYbslddQGtrmhM=
 github.com/segmentio/fasthash v1.0.3/go.mod h1:waKX8l2N8yckOgmSsXJi7x1ZfdKZ4x7KRMzBtS3oedY=
 github.com/zyedidia/generic v1.2.1 h1:Zv5KS/N2m0XZZiuLS82qheRG4X1o5gsWreGb0hR7XDc=
 github.com/zyedidia/generic v1.2.1/go.mod h1:ly2RBz4mnz1yeuVbQA/VFwGjK3mnHGRj1JuoG336Bis=
-golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63 h1:m64FZMko/V45gv0bNmrNYoDEq8U5YUhetc9cBWKS1TQ=
-golang.org/x/exp v0.0.0-20230817173708-d852ddb80c63/go.mod h1:0v4NqG35kSWCMzLaMeX+IQrlSnVE/bqGSyC2cz/9Le8=
+golang.org/x/exp v0.0.0-20231226003508-02704c960a9b h1:kLiC65FbiHWFAOu+lxwNPujcsl8VYyTYYEZnsOO1WK4=
+golang.org/x/exp v0.0.0-20231226003508-02704c960a9b/go.mod h1:iRJReGqOEeBhDZGkGbynYwcHlctCvnjTYIamk7uXpHI=
diff --git a/grid.go b/grid.go
index 4958ebb..3a2aac9 100644
--- a/grid.go
+++ b/grid.go
@@ -132,7 +132,7 @@ func (m *Map[T]) Path(
 	var (
 		road   *path
 		last   image.Point
-		closed = make(set.Set[image.Point])
+		closed = make(set.Unordered[image.Point])
 	)
 
 	queue := heap.New[*path](func(a, b *path) bool {
@@ -145,7 +145,7 @@ func (m *Map[T]) Path(
 		road, _ = queue.Pop()
 		last = road.Last()
 
-		if !closed.TryAdd(last) {
+		if !closed.Add(last) {
 			continue
 		}
 
diff --git a/grid_test.go b/grid_test.go
index 8be8994..548d54f 100644
--- a/grid_test.go
+++ b/grid_test.go
@@ -233,7 +233,7 @@ func TestMapPath(t *testing.T) {
 		src    = image.Pt(1, 1)
 		dst    = image.Pt(3, 2)
 		dirs   = Points(DirectionsCardinal...)
-		walls  = make(set.Set[image.Point])
+		walls  = make(set.Unordered[image.Point])
 		coster = func(p image.Point, d float64, _ struct{}) (cost float64, walkable bool) {
 			return d, !walls.Has(p)
 		}
@@ -357,8 +357,8 @@ func TestMapLOS(t *testing.T) {
 
 	var (
 		src    = image.Pt(1, 1)
-		walls  = make(set.Set[image.Point])
-		seen   = make(set.Set[image.Point])
+		walls  = make(set.Unordered[image.Point])
+		seen   = make(set.Unordered[image.Point])
 		caster = func(p image.Point, _ float64, _ struct{}) (walkable bool) {
 			if walls.Has(p) {
 				return false
@@ -386,7 +386,7 @@ func TestMapLOS(t *testing.T) {
 		t.Fail()
 	}
 
-	seen = make(set.Set[image.Point])
+	seen = make(set.Unordered[image.Point])
 
 	m.LineOfSight(image.Pt(10, 10), 6.0, caster)
 
@@ -405,7 +405,7 @@ func TestMapRayOOB(t *testing.T) {
 	)
 
 	var (
-		seen   = make(set.Set[image.Point])
+		seen   = make(set.Unordered[image.Point])
 		caster = func(p image.Point, _ float64, _ struct{}) (walkable bool) {
 			seen.Add(p)
 
@@ -439,8 +439,8 @@ func TestMapShadow(t *testing.T) {
 
 	var (
 		src    = image.Pt(1, 1)
-		walls  = make(set.Set[image.Point])
-		seen   = make(set.Set[image.Point])
+		walls  = make(set.Unordered[image.Point])
+		seen   = make(set.Unordered[image.Point])
 		caster = func(p image.Point, _ float64, _ struct{}) (walkable bool) {
 			if walls.Has(p) {
 				return false
@@ -486,7 +486,7 @@ func TestMapDijkstra(t *testing.T) {
 
 	var (
 		src     = image.Pt(2, 1)
-		walls   = make(set.Set[image.Point])
+		walls   = make(set.Unordered[image.Point])
 		targets = []image.Point{image.Pt(2, 4)}
 		dirs    = Points(DirectionsCardinal...)
 	)
@@ -593,7 +593,7 @@ func TestLineBresenham(t *testing.T) {
 	m := New[struct{}](image.Rect(0, 0, W, H))
 
 	for i, c := range cases {
-		seen := make(set.Set[image.Point])
+		seen := make(set.Unordered[image.Point])
 
 		m.LineBresenham(c.Src, c.Dst, func(p image.Point, _ struct{}) (ok bool) {
 			seen.Add(p)