diff --git a/.github/workflows/ci_workflows.yml b/.github/workflows/ci_workflows.yml
index 3f457ca3b2..7a683ef68b 100644
--- a/.github/workflows/ci_workflows.yml
+++ b/.github/workflows/ci_workflows.yml
@@ -65,10 +65,10 @@ jobs:
 
           # This also runs on cron but we want to make sure new changes
           # won't break this job at the PR stage.
-          - name: Python 3.12 with latest dev versions of key dependencies, and remote data
+          - name: Python 3.13 with latest dev versions of key dependencies, and remote data
             os: ubuntu-latest
-            python: '3.12'
-            toxenv: py312-test-devdeps
+            python: '3.13-dev'
+            toxenv: py313-test-devdeps
             toxposargs: --remote-data --run-slow
             allow_failure: true
 
diff --git a/tox.ini b/tox.ini
index 07eecb30c0..d3a604ff09 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{310,311,312}-test{,-alldeps,-devdeps,-predeps}{-romandeps}{,-cov}
+    py{310,311,312,313}-test{,-alldeps,-devdeps,-predeps}{-romandeps}{,-cov}
     linkcheck
     codestyle
     pep517