diff --git a/ILAsmVersion.txt b/ILAsmVersion.txt
index 4c73cd273a4a..8a01033cf17c 100644
--- a/ILAsmVersion.txt
+++ b/ILAsmVersion.txt
@@ -1 +1 @@
-2.1.0-preview1-25929-01
+2.1.0-preview1-26001-01
diff --git a/dependencies.props b/dependencies.props
index f4edc4a0a574..821bd5f2edfa 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>bba1a4613ae42244b45f786e64cfd3f7e27a17af</CoreFxCurrentRef>
-    <CoreClrCurrentRef>c1c732982a459885712239f25e9804523ca6be52</CoreClrCurrentRef>
+    <CoreFxCurrentRef>13ecbd199d34acf066fc80244ebbce90b5a3e788</CoreFxCurrentRef>
+    <CoreClrCurrentRef>13ecbd199d34acf066fc80244ebbce90b5a3e788</CoreClrCurrentRef>
     <BuildToolsCurrentRef>f234cc2844462657ba3c33ea34810577306ae9a1</BuildToolsCurrentRef>
-    <PgoDataCurrentRef>c1c732982a459885712239f25e9804523ca6be52</PgoDataCurrentRef>
+    <PgoDataCurrentRef>13ecbd199d34acf066fc80244ebbce90b5a3e788</PgoDataCurrentRef>
   </PropertyGroup>
 
   <!-- Tests/infrastructure dependency versions. -->
   <PropertyGroup>
-    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.5.0-preview1-25930-02</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
-    <MicrosoftNETCorePlatformsPackageVersion>2.1.0-preview1-25930-02</MicrosoftNETCorePlatformsPackageVersion>
-    <PgoDataPackageVersion>99.99.99-master-20171129-0045</PgoDataPackageVersion>
-    <MicrosoftNETCoreRuntimeCoreCLRPackageVersion>2.1.0-preview1-25929-01</MicrosoftNETCoreRuntimeCoreCLRPackageVersion>
+    <MicrosoftPrivateCoreFxNETCoreAppPackageVersion>4.5.0-preview1-26001-01</MicrosoftPrivateCoreFxNETCoreAppPackageVersion>
+    <MicrosoftNETCorePlatformsPackageVersion>2.1.0-preview1-26001-01</MicrosoftNETCorePlatformsPackageVersion>
+    <PgoDataPackageVersion>99.99.99-master-20171130-0053</PgoDataPackageVersion>
+    <MicrosoftNETCoreRuntimeCoreCLRPackageVersion>2.1.0-preview1-26001-01</MicrosoftNETCoreRuntimeCoreCLRPackageVersion>
     <XunitPackageVersion>2.2.0-beta2-build3300</XunitPackageVersion>
     <XunitConsoleNetcorePackageVersion>1.0.2-prerelease-00177</XunitConsoleNetcorePackageVersion>
     <XunitPerformanceApiPackageVersion>1.0.0-beta-build0012</XunitPerformanceApiPackageVersion>