diff --git a/build/dependencies.props b/build/dependencies.props
index 09d37136bd..4aa84ba6c2 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -3,11 +3,11 @@
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
   </PropertyGroup>
   <PropertyGroup Label="Package Versions">
-    <InternalAspNetCoreSdkPackageVersion>2.2.0-preview1-17102</InternalAspNetCoreSdkPackageVersion>
-    <MicrosoftAspNetCoreTestingPackageVersion>2.2.0-preview1-34823</MicrosoftAspNetCoreTestingPackageVersion>
-    <MicrosoftExtensionsDependencyInjectionAbstractionsPackageVersion>2.2.0-preview1-34823</MicrosoftExtensionsDependencyInjectionAbstractionsPackageVersion>
-    <MicrosoftExtensionsDependencyInjectionPackageVersion>2.2.0-preview1-34823</MicrosoftExtensionsDependencyInjectionPackageVersion>
-    <MicrosoftExtensionsOptionsPackageVersion>2.2.0-preview1-34823</MicrosoftExtensionsOptionsPackageVersion>
+    <InternalAspNetCoreSdkPackageVersion>2.2.0-preview1-20180731.1</InternalAspNetCoreSdkPackageVersion>
+    <MicrosoftAspNetCoreTestingPackageVersion>2.2.0-preview1-34882</MicrosoftAspNetCoreTestingPackageVersion>
+    <MicrosoftExtensionsDependencyInjectionAbstractionsPackageVersion>2.2.0-preview1-34882</MicrosoftExtensionsDependencyInjectionAbstractionsPackageVersion>
+    <MicrosoftExtensionsDependencyInjectionPackageVersion>2.2.0-preview1-34882</MicrosoftExtensionsDependencyInjectionPackageVersion>
+    <MicrosoftExtensionsOptionsPackageVersion>2.2.0-preview1-34882</MicrosoftExtensionsOptionsPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.9</MicrosoftNETCoreApp20PackageVersion>
     <MicrosoftNETCoreApp21PackageVersion>2.1.2</MicrosoftNETCoreApp21PackageVersion>
     <MicrosoftNETCoreApp22PackageVersion>2.2.0-preview1-26618-02</MicrosoftNETCoreApp22PackageVersion>
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index 6b8da29e6b..c7af2292c7 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.2.0-preview1-17102
-commithash:e7e2b5a97ca92cfc6acc4def534cb0901a6d1eb9
+version:2.2.0-preview1-20180731.1
+commithash:29fde58465439f4bb9df40830635ed758e063daf