diff --git a/build.proj b/build.proj
index 4aa253178..8f4bf2e19 100644
--- a/build.proj
+++ b/build.proj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="BuildTheWholeCli" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="15.0" DefaultTargets="BuildTheWholeCli" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="build/Microsoft.DotNet.Cli.Monikers.props" />
 
   <PropertyGroup>
diff --git a/build/test/RunTest.proj b/build/test/RunTest.proj
index b3faca530..ff9a68698 100644
--- a/build/test/RunTest.proj
+++ b/build/test/RunTest.proj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTarget="RunTest" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTarget="RunTest" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <!-- workaround for https://github.com/Microsoft/msbuild/issues/885 -->
   <PropertyGroup>