diff --git a/global.json b/global.json
index 8a1e66d6bf23..dd1a93e0d557 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "3.0.100-preview-010184"
+    "version": "3.0.100-preview4-010309"
   },
   "msbuild-sdks": {
     "Yarn.MSBuild": "1.13.0"
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index 671223b6f6d1..8b2e941904c5 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:3.0.0-build-20190219.1
-commithash:7effe75f1408a86a9c32b592192fea1097bdd3a3
+version:3.0.0-build-20190226.1
+commithash:6f01223531df91913e253760e93ccc595a418a36