diff --git a/BuildToolsVersion.txt b/BuildToolsVersion.txt
index e173b8066c4..0b9f9024c08 100644
--- a/BuildToolsVersion.txt
+++ b/BuildToolsVersion.txt
@@ -1 +1 @@
-2.1.0-preview2-02521-02
+2.1.0-preview2-02521-06
diff --git a/dependencies.props b/dependencies.props
index d060fc61864..61b600276c6 100644
--- a/dependencies.props
+++ b/dependencies.props
@@ -14,7 +14,7 @@
     <StandardCurrentRef>e062c12aadad133930b66c72481641f3b5073f82</StandardCurrentRef>
     <ProjectNTfsCurrentRef>e062c12aadad133930b66c72481641f3b5073f82</ProjectNTfsCurrentRef>
     <ProjectNTfsTestILCCurrentRef>e062c12aadad133930b66c72481641f3b5073f82</ProjectNTfsTestILCCurrentRef>
-    <BuildToolsCurrentRef>e062c12aadad133930b66c72481641f3b5073f82</BuildToolsCurrentRef>
+    <BuildToolsCurrentRef>4ee422a97de048a430fefd375aa3b56e8378ce9d</BuildToolsCurrentRef>
     <CoreClrCurrentRef>e062c12aadad133930b66c72481641f3b5073f82</CoreClrCurrentRef>
   </PropertyGroup>
 
@@ -53,7 +53,7 @@
   <!-- Package versions used as toolsets -->
   <PropertyGroup>
     <FeedTasksPackage>Microsoft.DotNet.Build.Tasks.Feed</FeedTasksPackage>
-    <FeedTasksPackageVersion>2.1.0-preview2-02521-02</FeedTasksPackageVersion>
+    <FeedTasksPackageVersion>2.1.0-preview2-02521-06</FeedTasksPackageVersion>
   </PropertyGroup>
 
   <!-- Package dependency verification/auto-upgrade configuration. -->