diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b14e515..5d613df 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,12 +15,12 @@ jobs:
     steps:
 
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Setup .NET
-      uses: actions/setup-dotnet@v2
+      uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
   
     - name: Build project
       run: dotnet build src\Umbraco.Community.Sustainability\Umbraco.Community.Sustainability.csproj --configuration Release
diff --git a/src/NuGet.config b/src/NuGet.config
new file mode 100644
index 0000000..bae753d
--- /dev/null
+++ b/src/NuGet.config
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <!-- Default NuGet source -->
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
+
+    <!-- Umbraco prereleases source -->
+    <add key="UmbracoPrereleases" value="https://www.myget.org/F/umbracoprereleases/api/v3/index.json" />
+  </packageSources>
+</configuration>
diff --git a/src/Umbraco.Community.Sustainability.TestSite.15.x/Umbraco.Community.Sustainability.TestSite.15.x.csproj b/src/Umbraco.Community.Sustainability.TestSite.15.x/Umbraco.Community.Sustainability.TestSite.15.x.csproj
index 9c3a055..5a422e8 100644
--- a/src/Umbraco.Community.Sustainability.TestSite.15.x/Umbraco.Community.Sustainability.TestSite.15.x.csproj
+++ b/src/Umbraco.Community.Sustainability.TestSite.15.x/Umbraco.Community.Sustainability.TestSite.15.x.csproj
@@ -7,8 +7,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Umbraco.Cms" Version="15.0.0-rc4" />
-    <PackageReference Include="Umbraco.TheStarterKit" Version="14.0.0" />
+    <PackageReference Include="Umbraco.Cms" Version="15.0.0" />
+    <PackageReference Include="Umbraco.TheStarterKit" Version="15.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Umbraco.Community.Sustainability.UI/package-lock.json b/src/Umbraco.Community.Sustainability.UI/package-lock.json
index 364eb69..7a0f98d 100644
--- a/src/Umbraco.Community.Sustainability.UI/package-lock.json
+++ b/src/Umbraco.Community.Sustainability.UI/package-lock.json
@@ -14,7 +14,7 @@
       },
       "devDependencies": {
         "@hey-api/openapi-ts": "^0.48.1",
-        "@umbraco-cms/backoffice": "^15.0.0-rc4",
+        "@umbraco-cms/backoffice": "^15.0.0",
         "typescript": "^5.2.2",
         "vite": "^5.2.8"
       }
@@ -1261,9 +1261,9 @@
       "peer": true
     },
     "node_modules/@umbraco-cms/backoffice": {
-      "version": "15.0.0-rc4",
-      "resolved": "https://registry.npmjs.org/@umbraco-cms/backoffice/-/backoffice-15.0.0-rc4.tgz",
-      "integrity": "sha512-abYgnr8Xo2LWu3JLF0P7Q40fhr/dalYKQfzMXYCdavZ4c0H4qAt1pMBfeUSsdu7KkaGdajY2ANRn7cEtmBfxAg==",
+      "version": "15.0.0",
+      "resolved": "https://registry.npmjs.org/@umbraco-cms/backoffice/-/backoffice-15.0.0.tgz",
+      "integrity": "sha512-uBuxc94G56+5AAibeyp/Ozg488EG0SVyARoo7Q0lZ6G5Dd+JdeFr840rLqSuU6DIv8+9lJnZTsf3NhKMnqzYFw==",
       "dev": true,
       "workspaces": [
         "./src/packages/*"
diff --git a/src/Umbraco.Community.Sustainability.UI/package.json b/src/Umbraco.Community.Sustainability.UI/package.json
index b6f80be..4391a52 100644
--- a/src/Umbraco.Community.Sustainability.UI/package.json
+++ b/src/Umbraco.Community.Sustainability.UI/package.json
@@ -17,7 +17,7 @@
   },
   "devDependencies": {
     "@hey-api/openapi-ts": "^0.48.1",
-    "@umbraco-cms/backoffice": "^15.0.0-rc4",
+    "@umbraco-cms/backoffice": "^15.0.0",
     "typescript": "^5.2.2",
     "vite": "^5.2.8"
   }
diff --git a/src/Umbraco.Community.Sustainability/Umbraco.Community.Sustainability.csproj b/src/Umbraco.Community.Sustainability/Umbraco.Community.Sustainability.csproj
index 5f23e3e..d6cf2dd 100644
--- a/src/Umbraco.Community.Sustainability/Umbraco.Community.Sustainability.csproj
+++ b/src/Umbraco.Community.Sustainability/Umbraco.Community.Sustainability.csproj
@@ -31,8 +31,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Playwright" Version="1.44.0" />
-    <PackageReference Include="Umbraco.Cms.Web.Website" Version="[15.0.0-rc4, 16.0.0)" />
-    <PackageReference Include="Umbraco.Cms.Api.Common" Version="[15.0.0-rc4, 16.0.0)" />
+    <PackageReference Include="Umbraco.Cms.Web.Website" Version="[15.0.0, 16.0.0)" />
+    <PackageReference Include="Umbraco.Cms.Api.Common" Version="[15.0.0, 16.0.0)" />
   </ItemGroup>
 
   <ItemGroup>