1 files changed, 2 insertions, 0 deletions

diff --git a/appveyor.yml b/appveyor.yml
index eaf1aee..80e9386 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,3 +1,5 @@
+os: Visual Studio 2017
+
 version: "{branch}-{build}"
 
 install: