diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index c803e558a..f1a7873ea 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,6 +1,6 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
 
-FROM mcr.microsoft.com/dotnet/core/sdk:3.1.101
+FROM mcr.microsoft.com/dotnet/core/sdk:3.1.408
     
 RUN pwsh --command Install-Module platyPS,Pester -Force
diff --git a/global.json b/global.json
index 775c52f92..a4152ac91 100644
--- a/global.json
+++ b/global.json
@@ -1,5 +1,5 @@
 {
     "sdk": {
-        "version": "3.1.101"
+        "version": "3.1.408"
     }
 }
diff --git a/tools/releaseBuild/Image/DockerFile b/tools/releaseBuild/Image/DockerFile
index 771b8c9fb..b73b770da 100644
--- a/tools/releaseBuild/Image/DockerFile
+++ b/tools/releaseBuild/Image/DockerFile
@@ -18,8 +18,8 @@ RUN Import-Module PackageManagement; `
     Install-ChocolateyPackage -PackageName git -Executable git.exe; `
     Install-ChocolateyPackage -PackageName nuget.commandline -Executable nuget.exe -Cleanup; `
     Install-Module -Force -Name platyPS -Repository PSGallery; `
-    Invoke-WebRequest -Uri https://raw.githubusercontent.com/dotnet/cli/master/scripts/obtain/dotnet-install.ps1 -outfile C:/dotnet-install.ps1; `
-    C:/dotnet-install.ps1 -Channel Release -Version 2.1.4; `
+    Invoke-WebRequest -Uri https://dot.net/v1/dotnet-install.ps1 -OutFile C:/dotnet-install.ps1; `
+    C:/dotnet-install.ps1 -Version 3.1.408; `
     Add-Path C:/Users/ContainerAdministrator/AppData/Local/Microsoft/dotnet;
 
 COPY buildPSSA.ps1 containerFiles/buildPSSA.ps1