diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 83884611..0d816c07 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
     name: Build
     strategy:
       matrix:
-        go-version: [1.22.x, 1.21.x]
+        go-version: [1.23.x, 1.22.x]
         platform: [ubuntu-20.04, macos-latest]
     runs-on: ${{ matrix.platform }}
     env:
diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 7fdf2170..c51ed4a7 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -13,7 +13,7 @@ jobs:
     if: github.event.pull_request.merged == true
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         platform: [ubuntu-latest]
 
     runs-on: ${{ matrix.platform }}
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 579fbc3f..e864fd4c 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -21,4 +21,4 @@ jobs:
         sudo apt-get install -qq gcc pkg-config libwayland-dev libx11-dev libx11-xcb-dev libxkbcommon-x11-dev libgles2-mesa-dev libegl1-mesa-dev libffi-dev libxcursor-dev libvulkan-dev xvfb xdotool
     - uses: dominikh/staticcheck-action@v1
       with:
-        version: "2023.1"
+        version: "2024.1"
diff --git a/go.mod b/go.mod
index 4d572dc6..2b965748 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module gonum.org/v1/plot
 
-go 1.21
+go 1.22.0
 
 require (
 	gioui.org v0.2.0
@@ -8,13 +8,13 @@ require (
 	git.sr.ht/~sbinet/gg v0.5.0
 	github.com/ajstarks/svgo v0.0.0-20211024235047-1546f124cd8b
 	github.com/andybalholm/stroke v0.0.0-20221221101821-bd29b49d73f0
-	github.com/go-fonts/latin-modern v0.3.1
-	github.com/go-fonts/liberation v0.3.1
-	github.com/go-latex/latex v0.0.0-20230307184459-12ec69307ad9
-	github.com/go-pdf/fpdf v0.8.0
-	golang.org/x/exp v0.0.0-20230801115018-d63ba01acd4b
-	golang.org/x/image v0.18.0
-	gonum.org/v1/gonum v0.14.0
+	github.com/go-fonts/latin-modern v0.3.3
+	github.com/go-fonts/liberation v0.3.3
+	github.com/go-latex/latex v0.0.0-20240709081214-31cef3c7570e
+	github.com/go-pdf/fpdf v0.9.0
+	golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c
+	golang.org/x/image v0.21.0
+	gonum.org/v1/gonum v0.15.1
 	rsc.io/pdf v0.1.1
 )
 
@@ -25,7 +25,7 @@ require (
 	github.com/go-text/typesetting v0.0.0-20230803102845-24e03d8b5372 // indirect
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	golang.org/x/exp/shiny v0.0.0-20230801115018-d63ba01acd4b // indirect
-	golang.org/x/sys v0.11.0 // indirect
-	golang.org/x/text v0.16.0 // indirect
+	golang.org/x/exp/shiny v0.0.0-20241009180824-f66d83c29e7c // indirect
+	golang.org/x/sys v0.26.0 // indirect
+	golang.org/x/text v0.19.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 78908dc5..84a946f1 100644
--- a/go.sum
+++ b/go.sum
@@ -22,16 +22,16 @@ github.com/andybalholm/stroke v0.0.0-20221221101821-bd29b49d73f0 h1:uF5Q/hWnDU1X
 github.com/andybalholm/stroke v0.0.0-20221221101821-bd29b49d73f0/go.mod h1:ccdDYaY5+gO+cbnQdFxEXqfy0RkoV25H3jLXUDNM3wg=
 github.com/campoy/embedmd v1.0.0 h1:V4kI2qTJJLf4J29RzI/MAt2c3Bl4dQSYPuflzwFH2hY=
 github.com/campoy/embedmd v1.0.0/go.mod h1:oxyr9RCiSXg0M3VJ3ks0UGfp98BpSSGr0kpiX3MzVl8=
-github.com/go-fonts/dejavu v0.1.0 h1:JSajPXURYqpr+Cu8U9bt8K+XcACIHWqWrvWCKyeFmVQ=
-github.com/go-fonts/dejavu v0.1.0/go.mod h1:4Wt4I4OU2Nq9asgDCteaAaWZOV24E+0/Pwo0gppep4g=
-github.com/go-fonts/latin-modern v0.3.1 h1:/cT8A7uavYKvglYXvrdDw4oS5ZLkcOU22fa2HJ1/JVM=
-github.com/go-fonts/latin-modern v0.3.1/go.mod h1:ysEQXnuT/sCDOAONxC7ImeEDVINbltClhasMAqEtRK0=
-github.com/go-fonts/liberation v0.3.1 h1:9RPT2NhUpxQ7ukUvz3jeUckmN42T9D9TpjtQcqK/ceM=
-github.com/go-fonts/liberation v0.3.1/go.mod h1:jdJ+cqF+F4SUL2V+qxBth8fvBpBDS7yloUL5Fi8GTGY=
-github.com/go-latex/latex v0.0.0-20230307184459-12ec69307ad9 h1:NxXI5pTAtpEaU49bpLpQoDsu1zrteW/vxzTz8Cd2UAs=
-github.com/go-latex/latex v0.0.0-20230307184459-12ec69307ad9/go.mod h1:gWuR/CrFDDeVRFQwHPvsv9soJVB/iqymhuZQuJ3a9OM=
-github.com/go-pdf/fpdf v0.8.0 h1:IJKpdaagnWUeSkUFUjTcSzTppFxmv8ucGQyNPQWxYOQ=
-github.com/go-pdf/fpdf v0.8.0/go.mod h1:gfqhcNwXrsd3XYKte9a7vM3smvU/jB4ZRDrmWSxpfdc=
+github.com/go-fonts/dejavu v0.3.4 h1:Qqyx9IOs5CQFxyWTdvddeWzrX0VNwUAvbmAzL0fpjbc=
+github.com/go-fonts/dejavu v0.3.4/go.mod h1:D1z0DglIz+lmpeNYMYlxW4r22IhcdOYnt+R3PShU/Kg=
+github.com/go-fonts/latin-modern v0.3.3 h1:g2xNgI8yzdNzIVm+qvbMryB6yGPe0pSMss8QT3QwlJ0=
+github.com/go-fonts/latin-modern v0.3.3/go.mod h1:tHaiWDGze4EPB0Go4cLT5M3QzRY3peya09Z/8KSCrpY=
+github.com/go-fonts/liberation v0.3.3 h1:tM/T2vEOhjia6v5krQu8SDDegfH1SfXVRUNNKpq0Usk=
+github.com/go-fonts/liberation v0.3.3/go.mod h1:eUAzNRuJnpSnd1sm2EyloQfSOT79pdw7X7++Ri+3MCU=
+github.com/go-latex/latex v0.0.0-20240709081214-31cef3c7570e h1:xcdj0LWnMSIU1j8+jIeJyfvk6SjgJedFQssSqFthJ2E=
+github.com/go-latex/latex v0.0.0-20240709081214-31cef3c7570e/go.mod h1:J4SAGzkcl+28QWi7yz72tyC/4aGnppOvya+AEv4TaAQ=
+github.com/go-pdf/fpdf v0.9.0 h1:PPvSaUuo1iMi9KkaAn90NuKi+P4gwMedWPHhj8YlJQw=
+github.com/go-pdf/fpdf v0.9.0/go.mod h1:oO8N111TkmKb9D7VvWGLvLJlaZUQVPM+6V42pp3iV4Y=
 github.com/go-text/typesetting v0.0.0-20230803102845-24e03d8b5372 h1:FQivqchis6bE2/9uF70M2gmmLpe82esEm2QadL0TEJo=
 github.com/go-text/typesetting v0.0.0-20230803102845-24e03d8b5372/go.mod h1:evDBbvNR/KaVFZ2ZlDSOWWXIUKq0wCOEtzLxRM8SG3k=
 github.com/go-text/typesetting-utils v0.0.0-20230616150549-2a7df14b6a22 h1:LBQTFxP2MfsyEDqSKmUBZaDuDHN1vpqDyOZjcqS7MYI=
@@ -45,12 +45,12 @@ 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 v0.0.0-20230801115018-d63ba01acd4b h1:r+vk0EmXNmekl0S0BascoeeoHk/L7wmaW2QF90K+kYI=
-golang.org/x/exp v0.0.0-20230801115018-d63ba01acd4b/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
-golang.org/x/exp/shiny v0.0.0-20230801115018-d63ba01acd4b h1:sgkbz1SFTsoQIvzTIw45hccUcGocu00QM3qucBYV8b0=
-golang.org/x/exp/shiny v0.0.0-20230801115018-d63ba01acd4b/go.mod h1:UH99kUObWAZkDnWqppdQe5ZhPYESUw8I0zVV1uWBR+0=
-golang.org/x/image v0.18.0 h1:jGzIakQa/ZXI1I0Fxvaa9W7yP25TqT6cHIHn+6CqvSQ=
-golang.org/x/image v0.18.0/go.mod h1:4yyo5vMFQjVjUcVk4jEQcU9MGy/rulF5WvUILseCM2E=
+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/exp/shiny v0.0.0-20241009180824-f66d83c29e7c h1:jTMrjjZRcSH/BDxWhXCP6OWsfVgmnwI7J+F4/nyVXaU=
+golang.org/x/exp/shiny v0.0.0-20241009180824-f66d83c29e7c/go.mod h1:3F+MieQB7dRYLTmnncoFbb1crS5lfQoTfDgQy6K4N0o=
+golang.org/x/image v0.21.0 h1:c5qV36ajHpdj4Qi0GnE0jUc/yuo33OLFaa0d+crTD5s=
+golang.org/x/image v0.21.0/go.mod h1:vUbsLavqK/W303ZroQQVKQ+Af3Yl6Uz1Ppu5J/cLz78=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -61,20 +61,20 @@ golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=
-golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.26.0 h1:KHjCJyddX0LoSTb3J+vWpupP9p0oznkqVk/IfjymZbo=
+golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
-golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
+golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
+golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-gonum.org/v1/gonum v0.14.0 h1:2NiG67LD1tEH0D7kM+ps2V+fXmsAnpUeec7n8tcr4S0=
-gonum.org/v1/gonum v0.14.0/go.mod h1:AoWeoz0becf9QMWtE8iWXNXc27fK4fNeHNf/oMejGfU=
+gonum.org/v1/gonum v0.15.1 h1:FNy7N6OUZVUaWG9pTiD+jlhdQ3lMP+/LcTpJ6+a8sQ0=
+gonum.org/v1/gonum v0.15.1/go.mod h1:eZTZuRFrzu5pcyjN5wJhcIhnUdNijYxX1T2IcrOGY0o=
 honnef.co/go/tools v0.1.3/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
 rsc.io/pdf v0.1.1 h1:k1MczvYDUvJBe93bYd7wrZLLUEcLZAuF824/I4e5Xr4=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
diff --git a/vg/vgsvg/vgsvg.go b/vg/vgsvg/vgsvg.go
index 210920cb..6d5447af 100644
--- a/vg/vgsvg/vgsvg.go
+++ b/vg/vgsvg/vgsvg.go
@@ -213,9 +213,9 @@ func (c *Canvas) Stroke(path vg.Path) {
 		style(elm("fill", "#000000", "none"),
 			elm("stroke", "none", colorString(c.context().color)),
 			elm("stroke-opacity", "1", opacityString(c.context().color)),
-			elm("stroke-width", "1", "%.*g", pr, c.context().lineWidth.Points()),
+			elmf("stroke-width", "1", "%.*g", pr, c.context().lineWidth.Points()),
 			elm("stroke-dasharray", "none", dashArrayString(c)),
-			elm("stroke-dashoffset", "0", "%.*g", pr, c.context().dashOffset.Points())))
+			elmf("stroke-dashoffset", "0", "%.*g", pr, c.context().dashOffset.Points())))
 }
 
 func (c *Canvas) Fill(path vg.Path) {
@@ -351,7 +351,7 @@ func (c *Canvas) FillString(font font.Face, pt vg.Point, str string) {
 	name := svgFontDescr(font)
 	sty := style(
 		name,
-		elm("font-size", "medium", "%.*gpx", pr, font.Font.Size.Points()),
+		elmf("font-size", "medium", "%.*gpx", pr, font.Font.Size.Points()),
 		elm("fill", "#000000", colorString(c.context().color)),
 	)
 	if sty != "" {
@@ -605,7 +605,18 @@ func style(elms ...string) string {
 // elm returns a style element string with the
 // given key and value.  If the value matches
 // default then the empty string is returned.
-func elm(key, def, f string, vls ...interface{}) string {
+func elm(key, def, f string) string {
+	val := f
+	if val == def {
+		return ""
+	}
+	return key + ":" + val
+}
+
+// elmf returns a style element string with the
+// given key and value.  If the value matches
+// default then the empty string is returned.
+func elmf(key, def, f string, vls ...interface{}) string {
 	value := fmt.Sprintf(f, vls...)
 	if value == def {
 		return ""