diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 485fc08f5..ab4b7c404 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -81,6 +81,8 @@ jobs:
         - linux: py39-devdeps-parallel
         - linux: py310-devdeps-parallel
         - linux: py311-devdeps-parallel
+        - linux: devdeps-parallel
+          python-version: "3.12.0-rc.1"
 
   oldest:
     needs: [core, asdf-schemas]
diff --git a/tox.ini b/tox.ini
index 727dd7f7a..a2fdf1b14 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 env_list =
     compatibility
     coverage
-    py{39,310,311}{,-compatibility,-coverage,-jsonschema}{,-parallel}
+    py{39,310,311,312}{,-compatibility,-coverage,-jsonschema}{,-parallel}
     asdf{-standard,-transform-schemas,-unit-schemas,-wcs-schemas,-coordinates-schemas,-astropy}
     gwcs
     jwst
@@ -12,6 +12,7 @@ env_list =
     weldx
     sunpy
     dkist
+    devdeps{,-parallel}
 
 [testenv]
 set_env =