diff --git a/.github/workflows/ci.yml b/.github/workflows/CI.yml
similarity index 85%
rename from .github/workflows/ci.yml
rename to .github/workflows/CI.yml
index fc794bf..3d75125 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/CI.yml
@@ -13,7 +13,6 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.6'
           - '1.10'
           - '1'
         os:
@@ -31,16 +30,15 @@ jobs:
         exclude:
             - os: windows-latest
               version:
-                - '1.6'
                 - '1.10'
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: julia-actions/setup-julia@v1
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: julia-actions/cache@v1
+      - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
         with:
diff --git a/Project.toml b/Project.toml
index 7ef6bde..7939d85 100644
--- a/Project.toml
+++ b/Project.toml
@@ -29,10 +29,10 @@ Colors = "0.9, 0.10, 0.11, 0.12, 0.13"
 CoordinateTransformations = "0.5, 0.6"
 DocStringExtensions = "0.5, 0.6, 0.7, 0.8, 0.9"
 FFMPEG = "0.2, 0.3, 0.4"
-GeometryBasics = "0.3, 0.4, 0.5"
+GeometryBasics = "0.3, 0.4"
 HTTP = "1"
 MeshIO = "0.4"
-Meshing = "0.5, 0.6"
+Meshing = "0.7"
 MsgPack = "1"
 Parameters = "0.10, 0.11, 0.12, 0.13"
 PrecompileTools = "1"
@@ -40,7 +40,7 @@ Requires = "0.5, 1"
 Rotations = "1"
 StaticArrays = "0.10, 0.11, 0.12, 1"
 Tar = "1"
-julia = "1.6"
+julia = "1.9"
 
 [extras]
 ColorTypes = "3da002f7-5984-5a60-b8a6-cbb66c0b333f"
diff --git a/Readme.md b/Readme.md
index 3fa658a..dac2f93 100644
--- a/Readme.md
+++ b/Readme.md
@@ -82,11 +82,13 @@ setobject!(vis, PointCloud(verts, colors))
 
 ```julia
 # Visualize a mesh from the level set of a function
-using Meshing: MarchingTetrahedra
-using GeometryBasics: Mesh, HyperRectangle
+using Meshing: MarchingTetrahedra, isosurface
+using GeometryBasics: Mesh, Point, TriangleFace, Vec
+xr, yr, zr = ntuple(_ -> LinRange(-1, 1, 50), 3)  # domain for the SDF evaluation
 f = x -> sum(sin, 5 * x)
-mesh = Mesh(f, HyperRectangle(Vec(-1, -1, -1), Vec(2, 2, 2)),
-            MarchingTetrahedra())
+sdf = [f(Vec(x,y,z)) for x in xr, y in yr, z in zr]
+vts, fcs = isosurface(sdf, MarchingTetrahedra(), xr, yr, zr)
+mesh = Mesh(Point.(vts), TriangleFace.(fcs))
 setobject!(vis, mesh,
            MeshPhongMaterial(color=RGBA{Float32}(1, 0, 0, 0.5)))
 ```
diff --git a/notebooks/Project.toml b/notebooks/Project.toml
index 4114917..2f0d173 100644
--- a/notebooks/Project.toml
+++ b/notebooks/Project.toml
@@ -9,8 +9,8 @@ MeshIO = "7269a6da-0436-5bbc-96c2-40638cbb6118"
 Rotations = "6038ab10-8711-5258-84ad-4b1120ba62dc"
 
 [compat]
-Colors = "0.9, 0.10, 0.11, 0.12"
+Colors = "0.9, 0.10, 0.11, 0.12, 0.13"
 FileIO = "1"
 GeometryBasics = "0.3, 0.4"
-Meshing = "0.5, 0.6"
+Meshing = "0.7"
 MeshIO = "0.4"
diff --git a/notebooks/demo.ipynb b/notebooks/demo.ipynb
index c3558a9..a21058c 100644
--- a/notebooks/demo.ipynb
+++ b/notebooks/demo.ipynb
@@ -36,7 +36,7 @@
     "using MeshCat\n",
     "using CoordinateTransformations\n",
     "using Rotations\n",
-    "using GeometryBasics: HyperRectangle, Vec, Point, Mesh\n",
+    "using GeometryBasics: HyperRectangle, Mesh, Point, TriangleFace, Vec\n",
     "using Colors: RGBA, RGB"
    ]
   },
@@ -384,10 +384,12 @@
     "# Those two pieces of information are all we need to construct a mesh geometry.\n",
     "\n",
     "# Using `Meshing.jl`, we can construct a mesh directly from our function:\n",
-    "using Meshing: MarchingCubes\n",
+    "using Meshing: MarchingTetrahedra, isosurface\n",
     "\n",
-    "bounds = HyperRectangle(lower_bound, upper_bound - lower_bound)\n",
-    "mesh = Mesh(f, bounds, MarchingCubes())\n",
+    "xr,yr,zr = ntuple(i->LinRange(lower_bound[i], upper_bound[i],50),3)\n",
+    "sdf = [f(Vec(x,y,z)) for x in xr, y in yr, z in zr]\n",
+    "vts, fcs = isosurface(sdf, MarchingTetrahedra(), xr, yr, zr)\n",
+    "mesh = Mesh(Point.(vts), TriangleFace.(fcs))\n",
     "\n",
     "# And now we can load that geometry into the visualizer\n",
     "setobject!(vis, mesh)"