diff --git a/.github/workflows/ci_cron_daily.yml b/.github/workflows/ci_cron_daily.yml
index 34899581a..3de924932 100644
--- a/.github/workflows/ci_cron_daily.yml
+++ b/.github/workflows/ci_cron_daily.yml
@@ -41,8 +41,8 @@ jobs:
             prefix: ''
 
           - os: ubuntu-latest
-            python: '3.12'
-            tox_env: 'py312-test-devdeps'
+            python: '3.13'
+            tox_env: 'py313-test-devdeps'
             toxposargs: --remote-data=any
             allow_failure: true
             prefix: '(Allowed failure)'
@@ -56,6 +56,7 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python }}
+        allow-prerelease: true
     - name: Install base dependencies
       run: python -m pip install --upgrade pip setuptools tox
     - name: Print Python, pip, setuptools, and tox versions
diff --git a/.github/workflows/ci_tests.yml b/.github/workflows/ci_tests.yml
index b82b67e40..dae8786fa 100644
--- a/.github/workflows/ci_tests.yml
+++ b/.github/workflows/ci_tests.yml
@@ -99,8 +99,8 @@ jobs:
             prefix: ''
 
           - os: ubuntu-latest
-            python: '3.12'
-            tox_env: 'py312-test-devdeps'
+            python: '3.13'
+            tox_env: 'py313-test-devdeps'
             toxposargs: --remote-data=any
             allow_failure: true
             prefix: '(Allowed failure)'
@@ -114,6 +114,7 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python }}
+        allow-prerelease: true
     - name: Install base dependencies
       run: python -m pip install --upgrade pip setuptools tox
     - name: Print Python, pip, setuptools, and tox versions
diff --git a/tox.ini b/tox.ini
index c482ecaa0..338e1b73e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 envlist =
-    py{310,311,312}-test{,-alldeps,-devdeps,-oldestdeps,-devinfra}{,-cov}
-    py{310,311,312}-test-numpy{126,200,210}
+    py{310,311,312,313}-test{,-alldeps,-devdeps,-oldestdeps,-devinfra}{,-cov}
+    py{310,311,312,313}-test-numpy{126,200,210}
     build_docs
     linkcheck
     codestyle