diff --git a/appveyor.yml b/appveyor.yml
index 22e4197a..1beb707e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -20,11 +20,15 @@ environment:
         - ARCH: x86
           TOOLCHAIN: MSVC
           BUILDSYSTEM: CMAKE
+        - ARCH: x64
+          TOOLCHAIN: MSVC
+          BUILDSYSTEM: CMAKE
 
 install:
     - if %BUILDSYSTEM%.==CMAKE. cinst ninja
     - if %BUILDSYSTEM%.==CMAKE. set PATH=c:/tools/ninja;%PATH%
-    - if %TOOLCHAIN%.==MSVC. call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars32.bat"
+    - if %TOOLCHAIN%%ARCH%.==MSVCx86. call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars32.bat"
+    - if %TOOLCHAIN%%ARCH%.==MSVCx64. call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
 
 before_build:
     - set BUILDTYPE= %ARCH%%TOOLCHAIN%