back to 3.9

Author: jpstroop

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
   test:
     strategy:
       matrix:
-        python-version: ["pypy3.10", "pypy3.11", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["pypy3.9", "pypy3.10", "pypy3.11", "3.9", "3.10", "3.11", "3.12", "3.13"]
     name: test
     runs-on: ubuntu-latest
     steps: