diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 4a2d6d6..2eb29a8 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: [3.8, 3.9. 3.10]
+        python-version: [3.8, 3.9, 3.10]
 
     env:
       OS: ${{ matrix.os }}