diff --git a/BuildToolsVersion.txt b/BuildToolsVersion.txt
index f81a8a4e525..fe6abbc777f 100644
--- a/BuildToolsVersion.txt
+++ b/BuildToolsVersion.txt
@@ -1 +1 @@
-2.1.0-preview2-02606-01
+2.1.0-preview2-02606-05
diff --git a/dependencies.props b/dependencies.props
index 4de007efd4f..9efcdd34988 100644
--- a/dependencies.props
+++ b/dependencies.props
@@ -9,27 +9,27 @@
        These ref versions are pulled from https://github.com/dotnet/versions.
   -->
   <PropertyGroup>
-    <CoreFxCurrentRef>15279cd0026b9e52f8ec1ebfd0d8c6e8945bfc4d</CoreFxCurrentRef>
+    <CoreFxCurrentRef>0167b3a44f6dda941b2a3a07b77934a58347f7de</CoreFxCurrentRef>
     <WCFCurrentRef>15279cd0026b9e52f8ec1ebfd0d8c6e8945bfc4d</WCFCurrentRef>
     <StandardCurrentRef>15279cd0026b9e52f8ec1ebfd0d8c6e8945bfc4d</StandardCurrentRef>
     <ProjectNTfsCurrentRef>6228d26347a4a79652347621b1d2a493f3ed9065</ProjectNTfsCurrentRef>
     <ProjectNTfsTestILCCurrentRef>6228d26347a4a79652347621b1d2a493f3ed9065</ProjectNTfsTestILCCurrentRef>
-    <BuildToolsCurrentRef>15279cd0026b9e52f8ec1ebfd0d8c6e8945bfc4d</BuildToolsCurrentRef>
+    <BuildToolsCurrentRef>0167b3a44f6dda941b2a3a07b77934a58347f7de</BuildToolsCurrentRef>
     <CoreClrCurrentRef>15279cd0026b9e52f8ec1ebfd0d8c6e8945bfc4d</CoreClrCurrentRef>
   </PropertyGroup>
 
   <!-- Auto-upgraded properties for each build info dependency. -->
   <PropertyGroup>
     <WCFExpectedPrerelease>preview2-26306-01</WCFExpectedPrerelease>
-    <CoreFxExpectedPrerelease>preview2-26305-02</CoreFxExpectedPrerelease>
+    <CoreFxExpectedPrerelease>preview2-26306-04</CoreFxExpectedPrerelease>
     <NETStandardPackageVersion>2.1.0-preview1-26228-01</NETStandardPackageVersion>
     <NETStandardPackageId>NETStandard.Library</NETStandardPackageId>
     <!--
       This property is used for many CoreFX packages, because they have the same
       versions. Make more properties for CoreFX if split versions are required.
     -->
-    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.5.0-preview2-26305-02</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
-    <MicrosoftPrivateCoreFxUAPPackageVersion>4.6.0-preview2-26305-02</MicrosoftPrivateCoreFxUAPPackageVersion>
+    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.5.0-preview2-26306-04</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
+    <MicrosoftPrivateCoreFxUAPPackageVersion>4.6.0-preview2-26306-04</MicrosoftPrivateCoreFxUAPPackageVersion>
 
     <ProjectNTfsExpectedPrerelease>beta-26226-00</ProjectNTfsExpectedPrerelease>
     <ProjectNTfsTestILCExpectedPrerelease>beta-26226-00</ProjectNTfsTestILCExpectedPrerelease>
@@ -53,7 +53,7 @@
   <!-- Package versions used as toolsets -->
   <PropertyGroup>
     <FeedTasksPackage>Microsoft.DotNet.Build.Tasks.Feed</FeedTasksPackage>
-    <FeedTasksPackageVersion>2.1.0-preview2-02606-01</FeedTasksPackageVersion>
+    <FeedTasksPackageVersion>2.1.0-preview2-02606-05</FeedTasksPackageVersion>
   </PropertyGroup>
 
   <!-- Package dependency verification/auto-upgrade configuration. -->