diff --git a/go.mod b/go.mod
index 33abc65e..480fb9ce 100644
--- a/go.mod
+++ b/go.mod
@@ -9,7 +9,6 @@ require (
 	codeberg.org/go-pdf/fpdf v0.10.0
 	git.sr.ht/~sbinet/gg v0.6.0
 	github.com/ajstarks/svgo v0.0.0-20211024235047-1546f124cd8b
-	golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c
 	golang.org/x/image v0.25.0
 	gonum.org/v1/gonum v0.16.0
 	rsc.io/pdf v0.1.1
diff --git a/go.sum b/go.sum
index a193529b..5200c7ee 100644
--- a/go.sum
+++ b/go.sum
@@ -28,8 +28,6 @@ github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9dec
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c h1:7dEasQXItcW1xKJ2+gg5VOiBnqWrJc+rq0DPKyvvdbY=
-golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c/go.mod h1:NQtJDoLvd6faHhE7m4T/1IY708gDefGGjR/iUW8yQQ8=
 golang.org/x/image v0.25.0 h1:Y6uW6rH1y5y/LK1J8BPWZtr6yZ7hrsy6hFrXjgsc2fQ=
 golang.org/x/image v0.25.0/go.mod h1:tCAmOEGthTtkalusGp1g3xa2gke8J6c2N565dTyl9Rs=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
diff --git a/gob/gob_test.go b/gob/gob_test.go
index 21f72fed..1067d21e 100644
--- a/gob/gob_test.go
+++ b/gob/gob_test.go
@@ -8,11 +8,10 @@ import (
 	"bytes"
 	"encoding/gob"
 	"image/color"
+	"math/rand/v2"
 	"os"
 	"testing"
 
-	"golang.org/x/exp/rand"
-
 	"gonum.org/v1/plot"
 	_ "gonum.org/v1/plot/gob"
 	"gonum.org/v1/plot/plotter"
@@ -25,7 +24,7 @@ func init() {
 }
 
 func TestPersistency(t *testing.T) {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// Get some random points
 	n := 15
diff --git a/palette/moreland/luminance_test.go b/palette/moreland/luminance_test.go
index 6e4c0312..7ab19547 100644
--- a/palette/moreland/luminance_test.go
+++ b/palette/moreland/luminance_test.go
@@ -7,10 +7,9 @@ package moreland
 import (
 	"fmt"
 	"image/color"
+	"math/rand/v2"
 	"testing"
 
-	"golang.org/x/exp/rand"
-
 	"gonum.org/v1/gonum/floats/scalar"
 )
 
@@ -151,10 +150,10 @@ func BenchmarkLuminance_At(b *testing.B) {
 			b.Fatal(err)
 		}
 		p.SetMax(1)
-		rand.Seed(1)
+		rng := rand.New(rand.NewPCG(1, 1))
 		b.Run(fmt.Sprintf("%d controls", n), func(b *testing.B) {
 			for i := 0; i < b.N; i++ {
-				if _, err := p.At(rand.Float64()); err != nil {
+				if _, err := p.At(rng.Float64()); err != nil {
 					b.Fatal(err)
 				}
 			}
diff --git a/palette/moreland/smooth_test.go b/palette/moreland/smooth_test.go
index 06e7ab90..8cff8409 100644
--- a/palette/moreland/smooth_test.go
+++ b/palette/moreland/smooth_test.go
@@ -7,11 +7,10 @@ package moreland
 import (
 	"image/color"
 	"math"
+	"math/rand/v2"
 	"strings"
 	"testing"
 
-	"golang.org/x/exp/rand"
-
 	"gonum.org/v1/plot/palette"
 )
 
@@ -177,7 +176,6 @@ func testRGB(t *testing.T, i int, label string, c1 color.Color, c2 [3]float64) {
 }
 
 func TestSmoothDiverging_At(t *testing.T) {
-
 	start := msh{M: 80, S: 1.08, H: -1.1}
 	end := msh{M: 80, S: 1.08, H: 0.5}
 	p := newSmoothDiverging(start, end, 88)
@@ -199,9 +197,9 @@ func TestSmoothDiverging_At(t *testing.T) {
 func BenchmarkSmoothDiverging_At(b *testing.B) {
 	p := SmoothBlueRed()
 	p.SetMax(1.0000000001)
-	rand.Seed(1)
+	rng := rand.New(rand.NewPCG(1, 1))
 	for i := 0; i < b.N; i++ {
-		if _, err := p.At(rand.Float64()); err != nil {
+		if _, err := p.At(rng.Float64()); err != nil {
 			b.Fatal(err)
 		}
 	}
diff --git a/plotter/barchart_example_test.go b/plotter/barchart_example_test.go
index d73a7a26..8d83bff4 100644
--- a/plotter/barchart_example_test.go
+++ b/plotter/barchart_example_test.go
@@ -7,10 +7,9 @@ package plotter_test
 import (
 	"image/color"
 	"log"
+	"math/rand/v2"
 	"runtime"
 
-	"golang.org/x/exp/rand"
-
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
 	"gonum.org/v1/plot/vg"
@@ -158,7 +157,7 @@ func ExampleBarChart() {
 
 // This example shows a bar chart with both positive and negative values.
 func ExampleBarChart_positiveNegative() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// Create random data points between -1 and 1.
 	const n = 6
diff --git a/plotter/boxplot_example_test.go b/plotter/boxplot_example_test.go
index 6a31e6d9..d3812f25 100644
--- a/plotter/boxplot_example_test.go
+++ b/plotter/boxplot_example_test.go
@@ -8,8 +8,7 @@ import (
 	"fmt"
 	"image/color"
 	"log"
-
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
@@ -17,7 +16,7 @@ import (
 )
 
 func ExampleBoxPlot() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// Create the sample data.
 	const n = 100
diff --git a/plotter/bubbles_example_test.go b/plotter/bubbles_example_test.go
index ae820c62..4febe20f 100644
--- a/plotter/bubbles_example_test.go
+++ b/plotter/bubbles_example_test.go
@@ -8,8 +8,7 @@ import (
 	"image/color"
 	"log"
 	"math"
-
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
@@ -21,7 +20,7 @@ import (
 // Each point is plotted with a different radius size depending on
 // external criteria.
 func ExampleScatter_bubbles() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// randomTriples returns some random but correlated x, y, z triples
 	randomTriples := func(n int) plotter.XYZs {
diff --git a/plotter/contour_example_test.go b/plotter/contour_example_test.go
index bac84556..ab5a9fad 100644
--- a/plotter/contour_example_test.go
+++ b/plotter/contour_example_test.go
@@ -7,11 +7,10 @@ package plotter_test
 import (
 	"log"
 	"math"
+	"math/rand/v2"
 	"runtime"
 	"testing"
 
-	"golang.org/x/exp/rand"
-
 	"gonum.org/v1/gonum/mat"
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/cmpimg"
@@ -21,7 +20,7 @@ import (
 )
 
 func ExampleContour() {
-	rnd := rand.New(rand.NewSource(1234))
+	rnd := rand.New(rand.NewPCG(1234, 1234))
 
 	const stddev = 2
 	data := make([]float64, 6400)
diff --git a/plotter/contour_test.go b/plotter/contour_test.go
index b412c14e..1803d5d9 100644
--- a/plotter/contour_test.go
+++ b/plotter/contour_test.go
@@ -8,13 +8,12 @@ import (
 	"flag"
 	"fmt"
 	"math"
+	"math/rand/v2"
 	"reflect"
 	"slices"
 	"sort"
 	"testing"
 
-	"golang.org/x/exp/rand"
-
 	"gonum.org/v1/gonum/mat"
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/palette"
@@ -74,7 +73,7 @@ func TestHeatMapWithContour(t *testing.T) {
 }
 
 func TestComplexContours(t *testing.T) {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	if !*visualDebug {
 		return
@@ -121,7 +120,7 @@ func BenchmarkComplexContour32(b *testing.B) { complexContourBench(32, b) }
 var cp map[float64][]vg.Path
 
 func complexContourBench(noise float64, b *testing.B) {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	data := make([]float64, 6400)
 	for i := range data {
diff --git a/plotter/errbars_example_test.go b/plotter/errbars_example_test.go
index 60283e32..e3391ca2 100644
--- a/plotter/errbars_example_test.go
+++ b/plotter/errbars_example_test.go
@@ -6,8 +6,7 @@ package plotter_test
 
 import (
 	"log"
-
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
@@ -16,7 +15,7 @@ import (
 
 // ExampleErrors draws points and error bars.
 func ExampleErrors() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	randomError := func(n int) plotter.Errors {
 		err := make(plotter.Errors, n)
diff --git a/plotter/filledLine_example_test.go b/plotter/filledLine_example_test.go
index 2be22156..b2e25fca 100644
--- a/plotter/filledLine_example_test.go
+++ b/plotter/filledLine_example_test.go
@@ -7,15 +7,15 @@ package plotter_test
 import (
 	"image/color"
 	"log"
-
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
+	"runtime"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
 )
 
 func ExampleLine_filledLine() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// randomPoints returns some random x, y points
 	// with some interesting kind of trend.
@@ -46,7 +46,7 @@ func ExampleLine_filledLine() {
 
 	p.Add(filled)
 
-	err = p.Save(200, 200, "testdata/filledLine.png")
+	err = p.Save(200, 200, "testdata/filledLine_"+runtime.GOARCH+".png")
 	if err != nil {
 		log.Panic(err)
 	}
diff --git a/plotter/filledLine_test.go b/plotter/filledLine_test.go
index 26430b3e..573628cd 100644
--- a/plotter/filledLine_test.go
+++ b/plotter/filledLine_test.go
@@ -7,10 +7,10 @@ package plotter_test
 import (
 	"image/color"
 	"log"
+	"math/rand/v2"
+	"runtime"
 	"testing"
 
-	"golang.org/x/exp/rand"
-
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/cmpimg"
 	"gonum.org/v1/plot/plotter"
@@ -18,7 +18,7 @@ import (
 
 // See https://github.com/gonum/plot/issues/488
 func clippedFilledLine() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// randomPoints returns some random x, y points
 	// with some interesting kind of trend.
@@ -49,8 +49,8 @@ func clippedFilledLine() {
 
 	p.Add(filled)
 	// testing clipping
-	p.X.Min, p.X.Max = 1, 3
-	p.Y.Max = -1
+	p.X.Min, p.X.Max = 1, 3.5
+	p.Y.Max = 4
 
 	err = p.Save(200, 200, "testdata/clippedFilledLine.png")
 	if err != nil {
@@ -59,6 +59,6 @@ func clippedFilledLine() {
 }
 
 func TestFilledLine(t *testing.T) {
-	cmpimg.CheckPlot(ExampleLine_filledLine, t, "filledLine.png")
+	cmpimg.CheckPlot(ExampleLine_filledLine, t, "filledLine_"+runtime.GOARCH+".png")
 	cmpimg.CheckPlot(clippedFilledLine, t, "clippedFilledLine.png")
 }
diff --git a/plotter/histogram_example_test.go b/plotter/histogram_example_test.go
index cc233afb..f4971ad7 100644
--- a/plotter/histogram_example_test.go
+++ b/plotter/histogram_example_test.go
@@ -8,8 +8,7 @@ import (
 	"image/color"
 	"log"
 	"math"
-
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
@@ -18,7 +17,7 @@ import (
 
 // An example of making a histogram.
 func ExampleHistogram() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// stdNorm returns the probability of drawing a
 	// value from a standard normal distribution.
diff --git a/plotter/quartile_example_test.go b/plotter/quartile_example_test.go
index 65129ac4..37b4d0b5 100644
--- a/plotter/quartile_example_test.go
+++ b/plotter/quartile_example_test.go
@@ -6,8 +6,7 @@ package plotter_test
 
 import (
 	"log"
-
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
@@ -15,7 +14,7 @@ import (
 )
 
 func ExampleQuartPlot() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// Create the example data.
 	n := 100
diff --git a/plotter/scatterColor_example_test.go b/plotter/scatterColor_example_test.go
index 982d4576..59806a37 100644
--- a/plotter/scatterColor_example_test.go
+++ b/plotter/scatterColor_example_test.go
@@ -8,10 +8,9 @@ import (
 	"fmt"
 	"log"
 	"math"
+	"math/rand/v2"
 	"os"
 
-	"golang.org/x/exp/rand"
-
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/palette/moreland"
 	"gonum.org/v1/plot/plotter"
@@ -24,7 +23,7 @@ import (
 // Each point is plotted with a different color depending on
 // external criteria.
 func ExampleScatter_color() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// randomTriples returns some random but correlated x, y, z triples
 	randomTriples := func(n int) plotter.XYZs {
@@ -76,7 +75,8 @@ func ExampleScatter_color() {
 		d := (z - minZ) / (maxZ - minZ)
 		rng := maxZ - minZ
 		k := d*rng + minZ
-		c, err := colors.At(k)
+		// Clamp k to avoid potential overflow due to floating point error.
+		c, err := colors.At(min(k, colors.Max()))
 		if err != nil {
 			log.Panic(err)
 		}
diff --git a/plotter/scatter_example_test.go b/plotter/scatter_example_test.go
index 9d354bc9..b0a80201 100644
--- a/plotter/scatter_example_test.go
+++ b/plotter/scatter_example_test.go
@@ -7,8 +7,7 @@ package plotter_test
 import (
 	"image/color"
 	"log"
-
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
@@ -19,7 +18,7 @@ import (
 // ExampleScatter draws some scatter points, a line,
 // and a line with points.
 func ExampleScatter() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// randomPoints returns some random x, y points
 	// with some interesting kind of trend.
diff --git a/plotter/step_example_test.go b/plotter/step_example_test.go
index 8c4a0de9..f9d6de16 100644
--- a/plotter/step_example_test.go
+++ b/plotter/step_example_test.go
@@ -7,8 +7,7 @@ package plotter_test
 import (
 	"image/color"
 	"log"
-
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
@@ -17,7 +16,7 @@ import (
 )
 
 func ExampleLine_stepLine() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// randomPoints returns some random x, y points
 	// with some interesting kind of trend.
diff --git a/plotter/testdata/barChart_positiveNegative_golden.png b/plotter/testdata/barChart_positiveNegative_golden.png
index b5365204..245390c1 100644
Binary files a/plotter/testdata/barChart_positiveNegative_golden.png and b/plotter/testdata/barChart_positiveNegative_golden.png differ
diff --git a/plotter/testdata/bubbles_golden.png b/plotter/testdata/bubbles_golden.png
index 531d2ed1..658ff1c3 100644
Binary files a/plotter/testdata/bubbles_golden.png and b/plotter/testdata/bubbles_golden.png differ
diff --git a/plotter/testdata/clippedFilledLine_golden.png b/plotter/testdata/clippedFilledLine_golden.png
index f959a4fe..85bd9f97 100644
Binary files a/plotter/testdata/clippedFilledLine_golden.png and b/plotter/testdata/clippedFilledLine_golden.png differ
diff --git a/plotter/testdata/contour_amd64_golden.png b/plotter/testdata/contour_amd64_golden.png
index efaad809..3c72e854 100644
Binary files a/plotter/testdata/contour_amd64_golden.png and b/plotter/testdata/contour_amd64_golden.png differ
diff --git a/plotter/testdata/contour_arm64_golden.png b/plotter/testdata/contour_arm64_golden.png
index 76034f6c..668b2339 100644
Binary files a/plotter/testdata/contour_arm64_golden.png and b/plotter/testdata/contour_arm64_golden.png differ
diff --git a/plotter/testdata/errorBars_golden.png b/plotter/testdata/errorBars_golden.png
index ddab3e65..50431c85 100644
Binary files a/plotter/testdata/errorBars_golden.png and b/plotter/testdata/errorBars_golden.png differ
diff --git a/plotter/testdata/filledLine_amd64_golden.png b/plotter/testdata/filledLine_amd64_golden.png
new file mode 100644
index 00000000..7b457474
Binary files /dev/null and b/plotter/testdata/filledLine_amd64_golden.png differ
diff --git a/plotter/testdata/filledLine_arm64_golden.png b/plotter/testdata/filledLine_arm64_golden.png
new file mode 100644
index 00000000..6d055308
Binary files /dev/null and b/plotter/testdata/filledLine_arm64_golden.png differ
diff --git a/plotter/testdata/filledLine_golden.png b/plotter/testdata/filledLine_golden.png
deleted file mode 100644
index e2ebf27c..00000000
Binary files a/plotter/testdata/filledLine_golden.png and /dev/null differ
diff --git a/plotter/testdata/groupedBoxPlot_golden.png b/plotter/testdata/groupedBoxPlot_golden.png
index 41abab82..3e4fd47b 100644
Binary files a/plotter/testdata/groupedBoxPlot_golden.png and b/plotter/testdata/groupedBoxPlot_golden.png differ
diff --git a/plotter/testdata/groupedQuartPlot_golden.png b/plotter/testdata/groupedQuartPlot_golden.png
index 382fc67b..9202a8fa 100644
Binary files a/plotter/testdata/groupedQuartPlot_golden.png and b/plotter/testdata/groupedQuartPlot_golden.png differ
diff --git a/plotter/testdata/histogram_golden.png b/plotter/testdata/histogram_golden.png
index bd2bdf8d..c383e34d 100644
Binary files a/plotter/testdata/histogram_golden.png and b/plotter/testdata/histogram_golden.png differ
diff --git a/plotter/testdata/horizontalBoxPlot_golden.png b/plotter/testdata/horizontalBoxPlot_golden.png
index 04d0744f..599bfa37 100644
Binary files a/plotter/testdata/horizontalBoxPlot_golden.png and b/plotter/testdata/horizontalBoxPlot_golden.png differ
diff --git a/plotter/testdata/horizontalQuartPlot_golden.png b/plotter/testdata/horizontalQuartPlot_golden.png
index 5508d407..07d5003c 100644
Binary files a/plotter/testdata/horizontalQuartPlot_golden.png and b/plotter/testdata/horizontalQuartPlot_golden.png differ
diff --git a/plotter/testdata/scatterColor_golden.png b/plotter/testdata/scatterColor_golden.png
index 6a878a41..913b965d 100644
Binary files a/plotter/testdata/scatterColor_golden.png and b/plotter/testdata/scatterColor_golden.png differ
diff --git a/plotter/testdata/scatter_golden.png b/plotter/testdata/scatter_golden.png
index 1dc39bae..ca33c63d 100644
Binary files a/plotter/testdata/scatter_golden.png and b/plotter/testdata/scatter_golden.png differ
diff --git a/plotter/testdata/step_golden.png b/plotter/testdata/step_golden.png
index 0e0a87aa..dd093cc1 100644
Binary files a/plotter/testdata/step_golden.png and b/plotter/testdata/step_golden.png differ
diff --git a/plotter/testdata/verticalBoxPlot_golden.png b/plotter/testdata/verticalBoxPlot_golden.png
index 861233bc..102f947e 100644
Binary files a/plotter/testdata/verticalBoxPlot_golden.png and b/plotter/testdata/verticalBoxPlot_golden.png differ
diff --git a/plotter/testdata/verticalQuartPlot_golden.png b/plotter/testdata/verticalQuartPlot_golden.png
index 6853cd40..9178d41d 100644
Binary files a/plotter/testdata/verticalQuartPlot_golden.png and b/plotter/testdata/verticalQuartPlot_golden.png differ
diff --git a/plotter/timeseries_example_test.go b/plotter/timeseries_example_test.go
index 1533154d..8caed8b8 100644
--- a/plotter/timeseries_example_test.go
+++ b/plotter/timeseries_example_test.go
@@ -7,10 +7,9 @@ package plotter_test
 import (
 	"image/color"
 	"log"
+	"math/rand/v2"
 	"time"
 
-	"golang.org/x/exp/rand"
-
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
 	"gonum.org/v1/plot/vg"
@@ -19,7 +18,7 @@ import (
 
 // Example_timeSeries draws a time series.
 func Example_timeSeries() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// xticks defines how we convert and display time.Time values.
 	xticks := plot.TimeTicks{Format: "2006-01-02\n15:04"}
diff --git a/plotutil/errorpoints_example_test.go b/plotutil/errorpoints_example_test.go
index 3b7e7d36..903ad2e0 100644
--- a/plotutil/errorpoints_example_test.go
+++ b/plotutil/errorpoints_example_test.go
@@ -5,7 +5,7 @@
 package plotutil_test
 
 import (
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
@@ -13,7 +13,7 @@ import (
 )
 
 func ExampleErrorPoints() {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// Get some random data.
 	n, m := 5, 10
diff --git a/plotutil/main.go b/plotutil/main.go
index f81905a0..0c16cfc2 100644
--- a/plotutil/main.go
+++ b/plotutil/main.go
@@ -8,7 +8,7 @@
 package main
 
 import (
-	"golang.org/x/exp/rand"
+	"math/rand/v2"
 
 	"gonum.org/v1/plot"
 	"gonum.org/v1/plot/plotter"
@@ -73,7 +73,7 @@ func drawJpg(name string, mkplot func() *plot.Plot) {
 
 // Example_errpoints draws some error points.
 func Example_errpoints() *plot.Plot {
-	rnd := rand.New(rand.NewSource(1))
+	rnd := rand.New(rand.NewPCG(1, 1))
 
 	// Get some random data.
 	n, m := 5, 10