diff --git a/.github/workflows/test_pr_and_main.yml b/.github/workflows/test_pr_and_main.yml
index 3a88edda6..6ccfd7a2b 100644
--- a/.github/workflows/test_pr_and_main.yml
+++ b/.github/workflows/test_pr_and_main.yml
@@ -33,7 +33,7 @@ jobs:
       - uses: conda-incubator/setup-miniconda@v2
         with:
           activate-environment: test_env
-          python-version: 3.8
+          python-version: 3.9
           auto-activate-base: false
       - name: Install dependencies
         run: |
diff --git a/setup.py b/setup.py
index 4f6a0ef88..02253aae8 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@
     author='David Woodruff',
     author_email='dlwoodruff@ucdavis.edu',
     packages=packages,
-    python_requires='>=3.8',
+    python_requires='>=3.9',
     install_requires=[
         'sortedcollections',
         'numpy<2',