diff --git a/BuildToolsVersion.txt b/BuildToolsVersion.txt
index a029fa9ca00b..1e88a36071ad 100644
--- a/BuildToolsVersion.txt
+++ b/BuildToolsVersion.txt
@@ -1 +1 @@
-2.1.0-preview3-02631-01
+2.1.0-preview3-02703-02
diff --git a/ILAsmVersion.txt b/ILAsmVersion.txt
index d51abb133d5d..e07f253acb40 100644
--- a/ILAsmVersion.txt
+++ b/ILAsmVersion.txt
@@ -1 +1 @@
-2.1.0-preview3-26402-06
+2.1.0-preview3-26404-01
diff --git a/dependencies.props b/dependencies.props
index e3ca3e6e8dbf..5edf8951876b 100644
--- a/dependencies.props
+++ b/dependencies.props
@@ -23,18 +23,18 @@
 
   <!-- Source of truth for dependency tooling: the commit hash of the dotnet/versions master branch as of the last auto-upgrade. -->
   <PropertyGroup>
-    <CoreFxCurrentRef>e7e23ca556615144d89b836d6516575f943cd940</CoreFxCurrentRef>
-    <CoreClrCurrentRef>e7e23ca556615144d89b836d6516575f943cd940</CoreClrCurrentRef>
-    <BuildToolsCurrentRef>3ea5068d11ab2844483e26cd71bf3c50216f9fe5</BuildToolsCurrentRef>
-    <PgoDataCurrentRef>553f30357d08df4ed6d32f70f3478a76f5db79c2</PgoDataCurrentRef>
+    <CoreFxCurrentRef>734a5552fdfa31da9f82aaff5ff14b863170ec0d</CoreFxCurrentRef>
+    <CoreClrCurrentRef>734a5552fdfa31da9f82aaff5ff14b863170ec0d</CoreClrCurrentRef>
+    <BuildToolsCurrentRef>734a5552fdfa31da9f82aaff5ff14b863170ec0d</BuildToolsCurrentRef>
+    <PgoDataCurrentRef>734a5552fdfa31da9f82aaff5ff14b863170ec0d</PgoDataCurrentRef>
   </PropertyGroup>
 
   <!-- Tests/infrastructure dependency versions. -->
   <PropertyGroup>
-    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.5.0-preview3-26402-02</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
-    <MicrosoftNETCorePlatformsPackageVersion>2.1.0-preview3-26402-02</MicrosoftNETCorePlatformsPackageVersion>
-    <PgoDataPackageVersion>99.99.99-master-20180228-0037</PgoDataPackageVersion>
-    <MicrosoftNETCoreRuntimeCoreCLRPackageVersion>2.1.0-preview3-26402-06</MicrosoftNETCoreRuntimeCoreCLRPackageVersion>
+    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.5.0-preview3-26403-04</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
+    <MicrosoftNETCorePlatformsPackageVersion>2.1.0-preview3-26403-04</MicrosoftNETCorePlatformsPackageVersion>
+    <PgoDataPackageVersion>99.99.99-master-20180403-1552</PgoDataPackageVersion>
+    <MicrosoftNETCoreRuntimeCoreCLRPackageVersion>2.1.0-preview3-26404-01</MicrosoftNETCoreRuntimeCoreCLRPackageVersion>
     <XunitPackageVersion>2.2.0-beta2-build3300</XunitPackageVersion>
     <XunitConsoleNetcorePackageVersion>1.0.2-prerelease-00177</XunitConsoleNetcorePackageVersion>
     <XunitPerformanceApiPackageVersion>1.0.0-beta-build0015</XunitPerformanceApiPackageVersion>
@@ -51,7 +51,7 @@
   <!-- Package versions used as toolsets -->
   <PropertyGroup>
     <FeedTasksPackage>Microsoft.DotNet.Build.Tasks.Feed</FeedTasksPackage>
-    <FeedTasksPackageVersion>2.1.0-preview3-02631-01</FeedTasksPackageVersion>
+    <FeedTasksPackageVersion>2.1.0-preview3-02703-02</FeedTasksPackageVersion>
   </PropertyGroup>
 
   <!-- Package dependency verification/auto-upgrade configuration. -->