diff --git a/.appveyor.yml b/.appveyor.yml
index 7e50cde..f5ef721 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,13 +1,14 @@
 build: false
 
 platform:
   - x86
+  - x64
 
 install:
   - git submodule update --init --recursive
   - IF "%PLATFORM%" == "x86" set PATH=C:\Python37;%PATH%
   - IF "%PLATFORM%" == "x64" set PATH=C:\Python37-x64;%PATH%
 
 test_script:
   - script\fetch-fixtures.cmd
   - python.exe setup.py --quiet test