diff --git a/build/VSIX.targets b/build/VSIX.targets
index 741ad357e..0c6a87a65 100644
--- a/build/VSIX.targets
+++ b/build/VSIX.targets
@@ -63,7 +63,6 @@
       <MSBuildArguments Include="
         $(VSIXProject);
         /t:Restore;
-        /m;
         /v:m;
         /p:Configuration=$(Configuration);
         /p:BuildNumber=$(BuildNumber);" />
@@ -96,7 +95,6 @@
       <MSBuildArguments Remove="@(MSBuildArguments)" />
       <MSBuildArguments Include="
         &quot;$(VSIXProject)&quot;;
-        /m;
         /v:M;
         /fl;
         &quot;/flp:LogFile=$(VSIXLogFilePath)&quot;;
diff --git a/global.json b/global.json
index f3ab343db..188416093 100644
--- a/global.json
+++ b/global.json
@@ -1 +1,5 @@
-{ "sdk": { "version": "2.1.300-preview2-008367" } }
+{ "sdk": { 
+"version": "2.1.300-rtm-008823" },
+"msbuild-sdks": {
+"Microsoft.DotNet.GlobalTools.Sdk": "2.1.0-rtm-15789"}
+ }
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index 26f117ee1..b51627af4 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.1.0-preview3-17003
-commithash:9504bd1c41624e96d7a429d63257d784c82defd8
+version:2.1.0-rtm-15789
+commithash:75fdcc47d080b39456e3c905dc1461bf861a44e1
diff --git a/korebuild.json b/korebuild.json
index 4af8c89b7..057e0b63d 100644
--- a/korebuild.json
+++ b/korebuild.json
@@ -1,11 +1,11 @@
 {
   "$schema": "https://raw.githubusercontent.com/aspnet/BuildTools/dev/tools/korebuild.schema.json",
-  "channel": "dev",
+  "channel": "release/2.1",
   "toolsets": {
     "visualstudio": {
       "required": false,
       "includePrerelease": true,
-      "minVersion": "15.0.26730.03",
+      "minVersion": "[15.0.26730.03, 15.9)",
       "requiredWorkloads": [
         "Microsoft.VisualStudio.Component.VSSDK"
       ]