diff --git a/.github/actions/sdk-update/action.yml b/.github/actions/sdk-update/action.yml
index 66f378f33..6aa61a92b 100644
--- a/.github/actions/sdk-update/action.yml
+++ b/.github/actions/sdk-update/action.yml
@@ -13,7 +13,7 @@ runs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '8.0.300'
+        dotnet-version: '8.0.400'
 
     - name: Setup GitVersion
       uses: gittools/actions/gitversion/setup@v1.1.1
diff --git a/build/.azure-pipelines.yml b/build/.azure-pipelines.yml
index 200324c81..0253bcccd 100644
--- a/build/.azure-pipelines.yml
+++ b/build/.azure-pipelines.yml
@@ -20,7 +20,7 @@ variables:
   DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
   IsCanaryBranch: $[startsWith(variables['Build.SourceBranch'], 'refs/heads/canaries/')]
   ValidationUnoCheckVersion: '1.24.0-dev.7'
-  ValidationDotNetVersion: '8.0.204'
+  ValidationDotNetVersion: '8.0.400'
 
 stages:
 - stage: Build
diff --git a/build/templates/dotnet-install-windows.yml b/build/templates/dotnet-install-windows.yml
index 1228510b9..bf2295397 100644
--- a/build/templates/dotnet-install-windows.yml
+++ b/build/templates/dotnet-install-windows.yml
@@ -1,5 +1,5 @@
 parameters:
-  DotNetVersion: '8.0.100'
+  DotNetVersion: '8.0.400'
 
 steps:
 
diff --git a/build/templates/package-validation.yml b/build/templates/package-validation.yml
index 15739de6e..d7cb23a7d 100644
--- a/build/templates/package-validation.yml
+++ b/build/templates/package-validation.yml
@@ -19,7 +19,7 @@ steps:
     $dotnetVersion = $env:TargetDotNetVersion
     if ($templateArgs -match 'net9.0')
     {
-        $dotnetVersion = '9.0.100-preview.2.24157.14'
+        $dotnetVersion = '9.0.100-rc.1.24452.12'
     }
 
     echo "##vso[task.setvariable variable=DotNetVersion]$dotnetVersion"
diff --git a/src/Uno.Sdk/ReadMe.md b/src/Uno.Sdk/ReadMe.md
index 3f6b27144..7a5a19eca 100644
--- a/src/Uno.Sdk/ReadMe.md
+++ b/src/Uno.Sdk/ReadMe.md
@@ -151,7 +151,7 @@ The Uno.Sdk powers the Uno Platform Single Project, including the ability to imp
       "Microsoft.Extensions.Logging.Console"
     ],
     "versionOverride": {
-      "net9.0": "9.0.0-preview.7.24405.7"
+      "net9.0": "9.0.0-rc.1.24431.7"
     }
   },
   {
@@ -161,7 +161,7 @@ The Uno.Sdk powers the Uno Platform Single Project, including the ability to imp
       "Microsoft.Windows.Compatibility"
     ],
     "versionOverride": {
-      "net9.0": "9.0.0-preview.7.24405.2"
+      "net9.0": "9.0.0-rc.1.24452.1"
     }
   },
   {
@@ -273,7 +273,7 @@ The Uno.Sdk powers the Uno Platform Single Project, including the ability to imp
       "Microsoft.Maui.Graphics"
     ],
     "versionOverride": {
-      "net9.0": "9.0.0-preview.7.24407.4"
+      "net9.0": "9.0.0-rc.1.24453.9"
     }
   },
   {
diff --git a/src/Uno.Sdk/packages.json b/src/Uno.Sdk/packages.json
index 3bac84778..6af2ae57f 100644
--- a/src/Uno.Sdk/packages.json
+++ b/src/Uno.Sdk/packages.json
@@ -110,7 +110,7 @@
       "Microsoft.Extensions.Logging.Console"
     ],
     "versionOverride": {
-      "net9.0": "9.0.0-preview.7.24405.7"
+      "net9.0": "9.0.0-rc.1.24431.7"
     }
   },
   {
@@ -120,7 +120,7 @@
       "Microsoft.Windows.Compatibility"
     ],
     "versionOverride": {
-      "net9.0": "9.0.0-preview.7.24405.2"
+      "net9.0": "9.0.0-rc.1.24452.1"
     }
   },
   {
@@ -232,7 +232,7 @@
       "Microsoft.Maui.Graphics"
     ],
     "versionOverride": {
-      "net9.0": "9.0.0-preview.7.24407.4"
+      "net9.0": "9.0.0-rc.1.24453.9"
     }
   },
   {
diff --git a/src/Uno.Templates/content/unoapp/.template.config/template.json b/src/Uno.Templates/content/unoapp/.template.config/template.json
index 5cc545872..6ed3d8f18 100644
--- a/src/Uno.Templates/content/unoapp/.template.config/template.json
+++ b/src/Uno.Templates/content/unoapp/.template.config/template.json
@@ -2691,7 +2691,7 @@
           },
           {
             "condition": "(tfm == 'net9.0')",
-            "value": "9.0.0-preview.1.24080.9"
+            "value": "9.0.0-rc.1.24431.7"
           }
         ]
       }
@@ -2710,7 +2710,7 @@
           },
           {
             "condition": "(tfm == 'net9.0')",
-            "value": "9.0.0-preview.1.24081.3"
+            "value": "9.0.0-rc.1.24452.1"
           }
         ]
       }