diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index eea8f344..31742757 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -48,7 +48,10 @@ jobs:
       matrix:
         include:
           - python: 2.7
+          - python: 3.6
+          - python: 3.7
           - python: 3.8
+          - python: '3.9.0-alpha - 3.9.x' # Python latest
     steps:
     - name: Checkout capa with submodules
       uses: actions/checkout@v2