diff --git a/.github/workflows/ci_workflows.yml b/.github/workflows/ci_workflows.yml
index c521d4e39..d025f1a79 100644
--- a/.github/workflows/ci_workflows.yml
+++ b/.github/workflows/ci_workflows.yml
@@ -47,15 +47,19 @@ jobs:
 
         # Test some configurations on Windows
         - windows: py38-test
-        - windows: py310-test
-        - windows: py311-test
-        - windows: py312-test
+        - windows: py39-test
 
         # Test against latest developer versions of some packages
         - linux: py310-test-dev-all
         - linux: py311-test-dev
         - linux: py312-test-dev-all
 
+        - macos: py311-test-dev-all
+        - macos: py312-test-dev
+
+        - windows: py310-test-dev
+        - windows: py312-test-dev
+
   publish:
     needs: tests
     uses: OpenAstronomy/github-actions-workflows/.github/workflows/publish_pure_python.yml@v1
diff --git a/tox.ini b/tox.ini
index af2cb3a50..c0ac94269 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,10 +21,10 @@ changedir =
     test: .tmp/{envname}
     docs: doc
 deps =
-    dev: numpy==2.0.0rc1
-    dev: scipy==1.13.0
-    dev: astropy==6.1.0rc1
-    dev: shapely>=0.0.dev0
+    dev: numpy>=0.0.dev0
+    dev: scipy>=0.0.dev0
+    dev: astropy>=0.0.dev0
+    dev: pandas>=0.0.dev0
     dev: git+https://github.com/radio-astro-tools/casa-formats-io.git
     # LTS
     lts: astropy==5.0.*