diff --git a/appveyor.yml b/appveyor.yml
index 6a372fb..4073398 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,5 @@
 version: '{build}'
-os: Visual Studio 2017
+os: Visual Studio 2017 Preview
 environment:
   BUILDING_ON_PLATFORM: win
   BuildEnvironment: appveyor