diff --git a/appveyor.yml b/appveyor.yml
index 49fe13c3..80e86c5d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,6 +4,11 @@ environment:
   matrix:
     - PYTHON: "C:/Python27"
       COVERAGE_PROCESS_START: gluon/tests/coverage.ini
+      PYTHON_ARCH: "64"
+
+    - PYTHON: "C:/Python35"
+      COVERAGE_PROCESS_START: gluon/tests/coverage.ini
+      PYTHON_ARCH: "64"
 
 clone_depth: 50
 
@@ -16,10 +21,14 @@ install:
   - python get-pip.py
   - pip install codecov
   - git submodule update --init --recursive
+  - pip install pycrypto
+  # Check that we have the expected version and architecture for Python
+  - "python --version"
+  - "python -c \"import struct; print(struct.calcsize('P') * 8)\""
 
 test_script:
   - python web2py.py --run_system_tests --with_coverage
 
 after_test:
   - coverage combine
-  - codecov
\ No newline at end of file
+  - codecov