diff --git a/build.ps1 b/build.ps1
index 8bd00b5dd6..f55974f3e6 100644
--- a/build.ps1
+++ b/build.ps1
@@ -33,7 +33,7 @@ cd $PSScriptRoot
 $repoFolder = $PSScriptRoot
 $env:REPO_FOLDER = $repoFolder
 
-$koreBuildZip="https://github.com/aspnet/KoreBuild/archive/rel/1.0.0-msbuild-rtm.zip"
+$koreBuildZip="https://github.com/aspnet/KoreBuild/archive/rel/1.0.0-msbuild3.zip"
 if ($env:KOREBUILD_ZIP)
 {
     $koreBuildZip=$env:KOREBUILD_ZIP
diff --git a/build.sh b/build.sh
index 98568e62af..2f6c7fe68e 100755
--- a/build.sh
+++ b/build.sh
@@ -2,7 +2,7 @@
 repoFolder="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 cd $repoFolder
 
-koreBuildZip="https://github.com/aspnet/KoreBuild/archive/rel/1.0.0-msbuild-rtm.zip"
+koreBuildZip="https://github.com/aspnet/KoreBuild/archive/rel/1.0.0-msbuild3.zip"
 if [ ! -z $KOREBUILD_ZIP ]; then
     koreBuildZip=$KOREBUILD_ZIP
 fi
diff --git a/global.json b/global.json
new file mode 100644
index 0000000000..005c9ae15e
--- /dev/null
+++ b/global.json
@@ -0,0 +1,5 @@
+{
+  "sdk": {
+    "version": "1.0.0-preview4-004233"
+  }
+}
\ No newline at end of file