diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index dce3220..cce9f0f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,7 @@ jobs:
       max-parallel: 4
       matrix:
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        python-version: [3.9", "3.10"]
+        python-version: ["3.9", "3.10"]
 
     steps:
     - uses: actions/checkout@v4