diff --git a/appveyor.yml b/appveyor.yml
index 9d20fa66..5362db1d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,7 @@
 version: 1.2.{build}
-image: Visual Studio 2015
+image:
+  - Visual Studio 2013
+  - Visual Studio 2015
 configuration: Debug
 install:
   - cmd: openssl version