diff --git a/.nuke/build.schema.json b/.nuke/build.schema.json
index b189377e..9a68b28e 100644
--- a/.nuke/build.schema.json
+++ b/.nuke/build.schema.json
@@ -1,60 +1,92 @@
 {
   "$schema": "http://json-schema.org/draft-04/schema#",
-  "$ref": "#/definitions/build",
-  "title": "Build Schema",
+  "properties": {
+    "Configuration": {
+      "type": "string",
+      "description": "Configuration to build - Default is 'Release'",
+      "enum": [
+        "Debug",
+        "Release"
+      ]
+    },
+    "GlobalVips": {
+      "type": "boolean",
+      "description": "Test with a globally installed libvips"
+    },
+    "Package": {
+      "type": "boolean",
+      "description": "Build and create NuGet packages"
+    },
+    "SkipTests": {
+      "type": "boolean",
+      "description": "Skip unit tests"
+    },
+    "Solution": {
+      "type": "string",
+      "description": "Path to a solution file that is automatically loaded"
+    }
+  },
   "definitions": {
-    "build": {
-      "type": "object",
+    "Host": {
+      "type": "string",
+      "enum": [
+        "AppVeyor",
+        "AzurePipelines",
+        "Bamboo",
+        "Bitbucket",
+        "Bitrise",
+        "GitHubActions",
+        "GitLab",
+        "Jenkins",
+        "Rider",
+        "SpaceAutomation",
+        "TeamCity",
+        "Terminal",
+        "TravisCI",
+        "VisualStudio",
+        "VSCode"
+      ]
+    },
+    "ExecutableTarget": {
+      "type": "string",
+      "enum": [
+        "All",
+        "Clean",
+        "CreateNativeNuGetPackages",
+        "CreateNetVipsExtensionsNugetPackage",
+        "CreateNetVipsNugetPackage",
+        "DownloadBinaries",
+        "RunTests"
+      ]
+    },
+    "Verbosity": {
+      "type": "string",
+      "description": "",
+      "enum": [
+        "Verbose",
+        "Normal",
+        "Minimal",
+        "Quiet"
+      ]
+    },
+    "NukeBuild": {
       "properties": {
-        "Configuration": {
-          "type": "string",
-          "description": "Configuration to build - Default is 'Release'",
-          "enum": [
-            "Debug",
-            "Release"
-          ]
-        },
         "Continue": {
           "type": "boolean",
           "description": "Indicates to continue a previously failed build attempt"
         },
-        "GlobalVips": {
-          "type": "boolean",
-          "description": "Test with a globally installed libvips"
-        },
         "Help": {
           "type": "boolean",
           "description": "Shows the help text for this build assembly"
         },
         "Host": {
-          "type": "string",
           "description": "Host for execution. Default is 'automatic'",
-          "enum": [
-            "AppVeyor",
-            "AzurePipelines",
-            "Bamboo",
-            "Bitbucket",
-            "Bitrise",
-            "GitHubActions",
-            "GitLab",
-            "Jenkins",
-            "Rider",
-            "SpaceAutomation",
-            "TeamCity",
-            "Terminal",
-            "TravisCI",
-            "VisualStudio",
-            "VSCode"
-          ]
+          "$ref": "#/definitions/Host"
         },
         "NoLogo": {
           "type": "boolean",
           "description": "Disables displaying the NUKE logo"
         },
-        "Package": {
-          "type": "boolean",
-          "description": "Build and create NuGet packages"
-        },
         "Partition": {
           "type": "string",
           "description": "Partition to use on CI"
@@ -78,53 +110,22 @@
           "type": "array",
           "description": "List of targets to be skipped. Empty list skips all dependencies",
           "items": {
-            "type": "string",
-            "enum": [
-              "All",
-              "Clean",
-              "CreateNativeNuGetPackages",
-              "CreateNetVipsExtensionsNugetPackage",
-              "CreateNetVipsNugetPackage",
-              "DownloadBinaries",
-              "RunTests"
-            ]
+            "$ref": "#/definitions/ExecutableTarget"
           }
         },
-        "SkipTests": {
-          "type": "boolean",
-          "description": "Skip unit tests"
-        },
-        "Solution": {
-          "type": "string",
-          "description": "Path to a solution file that is automatically loaded"
-        },
         "Target": {
           "type": "array",
           "description": "List of targets to be invoked. Default is '{default_target}'",
           "items": {
-            "type": "string",
-            "enum": [
-              "All",
-              "Clean",
-              "CreateNativeNuGetPackages",
-              "CreateNetVipsExtensionsNugetPackage",
-              "CreateNetVipsNugetPackage",
-              "DownloadBinaries",
-              "RunTests"
-            ]
+            "$ref": "#/definitions/ExecutableTarget"
           }
         },
         "Verbosity": {
-          "type": "string",
           "description": "Logging verbosity during build execution. Default is 'Normal'",
-          "enum": [
-            "Minimal",
-            "Normal",
-            "Quiet",
-            "Verbose"
-          ]
+          "$ref": "#/definitions/Verbosity"
         }
       }
     }
-  }
+  },
+  "$ref": "#/definitions/NukeBuild"
 }
diff --git a/build/NetVips.Build.csproj b/build/NetVips.Build.csproj
index 19baf89e..1336d116 100644
--- a/build/NetVips.Build.csproj
+++ b/build/NetVips.Build.csproj
@@ -17,7 +17,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Nuke.Common" Version="8.0.0" />
+    <PackageReference Include="Nuke.Common" Version="8.1.0" />
     <PackageReference Include="SharpZipLib" Version="1.4.2" />
   </ItemGroup>
 
diff --git a/build/Shims.cs b/build/Shims.cs
index 0b45004c..aafd258f 100644
--- a/build/Shims.cs
+++ b/build/Shims.cs
@@ -5,7 +5,6 @@
 using System.Xml.Linq;
 using ICSharpCode.SharpZipLib.GZip;
 using ICSharpCode.SharpZipLib.Tar;
-using Nuke.Common;
 using Nuke.Common.CI;
 using Nuke.Common.CI.AppVeyor;
 using Nuke.Common.CI.GitHubActions;
diff --git a/tests/NetVips.Tests/NetVips.Tests.csproj b/tests/NetVips.Tests/NetVips.Tests.csproj
index 38cd1e7c..13bfcdd3 100644
--- a/tests/NetVips.Tests/NetVips.Tests.csproj
+++ b/tests/NetVips.Tests/NetVips.Tests.csproj
@@ -22,7 +22,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" Condition="'$(MSBuildRuntimeType)' == 'Mono'" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="xunit" Version="2.9.0" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.4.13" />
   </ItemGroup>