diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index de542c4..1750107 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,12 +6,15 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: [3.8, 3.6, pypy3]
+        python-architecture: [x64, x86]
       fail-fast: false
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
         with:
-          python-version: '3.8'
+          python-version: ${{matrix.python-version}}
+          architecture: ${{matrix.python-architecture}}
       - run: |
           python -m pip install poetry
           poetry install