diff --git a/.appveyor.yml b/.appveyor.yml
index 395b92f..ef4efb9 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,5 +1,5 @@
 version: '{branch}.{build}'
-os: Visual Studio 2015
+os: Visual Studio 2017
 clone_depth: 1
 environment:
   matrix: