diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bdf91b8..30400e4 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.7", "3.8"]
+        python-version: ["3.7", "3.8", "3.9"]
         node-version: ["16", "17"]
         include:
           - python-version: "3.7"