diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 55a62a182..614cc5d2d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -412,7 +412,7 @@ jobs:
         id: setup-python
         with:
           # Set this to the oldest Python version supported by BinderHub
-          python-version: "3.8"
+          python-version: "3.9"
 
       - name: Cache pip
         uses: actions/cache@v4