diff --git a/appveyor.yml b/appveyor.yml
index 081ac5567d..c2beb58a80 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,5 @@
 version: 0.0.4.{build}
+os: Previous Visual Studio 2015
 build_script:
 - ps: >-
     .\setenv.ps1