diff --git a/build/dependencies.props b/build/dependencies.props
index b64a798b78..756d48feb4 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -29,10 +29,10 @@
     <MicrosoftExtensionsPlatformAbstractionsPackageVersion>1.1.0</MicrosoftExtensionsPlatformAbstractionsPackageVersion>
     <MicrosoftExtensionsSecurityHelperSourcesPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsSecurityHelperSourcesPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.0</MicrosoftNETCoreApp20PackageVersion>
-    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview1-25907-02</MicrosoftNETCoreApp21PackageVersion>
+    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview1-25915-01</MicrosoftNETCoreApp21PackageVersion>
     <MicrosoftNETCoreCompilersPackageVersion>2.6.0-beta2-62211-02</MicrosoftNETCoreCompilersPackageVersion>
     <MicrosoftNETTestSdkPackageVersion>15.3.0</MicrosoftNETTestSdkPackageVersion>
-    <SystemBuffersPackageVersion>4.4.0</SystemBuffersPackageVersion>
+    <SystemBuffersPackageVersion>4.5.0-preview1-25914-04</SystemBuffersPackageVersion>
     <SystemIOPipelinesPackageVersion>0.1.0-alpha-002</SystemIOPipelinesPackageVersion>
     <SystemManagementAutomationDllPackageVersion>10.0.10586</SystemManagementAutomationDllPackageVersion>
     <SystemMemoryPackageVersion>4.5.0-preview1-25902-08</SystemMemoryPackageVersion>
@@ -42,10 +42,8 @@
     <SystemTextEncodingsWebUtf8PackageVersion>0.1.0-alpha-002</SystemTextEncodingsWebUtf8PackageVersion>
     <XunitPackageVersion>2.3.0</XunitPackageVersion>
     <XunitRunnerVisualStudioPackageVersion>2.3.0</XunitRunnerVisualStudioPackageVersion>
-
     <MicrosoftWebAdministrationPackageVersion>7.0.0</MicrosoftWebAdministrationPackageVersion>
     <MicrosoftNetHttpHeadersPackageVersion>2.0.0</MicrosoftNetHttpHeadersPackageVersion>    
-  
   </PropertyGroup>
   <Import Project="$(DotNetPackageVersionPropsPath)" Condition=" '$(DotNetPackageVersionPropsPath)' != '' " />
 </Project>
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index fe4a961da3..bd5633da7c 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,7 @@
+<<<<<<< HEAD
 version:2.1.0-preview1-15620
 commithash:6432b49a2c00310416df39b6fe548ef4af9c6011
+=======
+version:2.1.0-preview1-15618
+commithash:00ce1383114015fe89b221146036e59e6bc11219
+>>>>>>> 0dae9f5... Update dependencies.props