diff --git a/appveyor.yml b/appveyor.yml
index 4ebf925..cbac859 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -15,6 +15,10 @@ environment:
 #    - PYTHON: "C:\\Python36-x64"
     - PYTHON: "C:\\Python37-x64"
 
+platform:
+  - x86
+  - x64
+
 install:
   - "%PYTHON%\\python.exe -m pip install wheel PyMuPDF pytest pyinstaller"