diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c1005dc6..5e354ec5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,8 @@ jobs:
         - linux: py310
         - linux: py311-cov
           coverage: codecov
-        - linux: py312
+        - linux: py312-withromancal-cov
+          coverage: codecov
         - linux: py313
         - macos: py311
   test_upstream:
@@ -33,9 +34,26 @@ jobs:
     with:
       envs: |
         - linux: rad
-  test_with_romancal:
+
+  environment:
+    runs-on: ubuntu-latest
+    steps:
+      - id: data_path
+        run: echo "path=${{ runner.temp }}/data" >> $GITHUB_OUTPUT
+    outputs:
+      data_path: ${{ steps.data_path.outputs.path }}
+  crds_contexts:
+    uses: spacetelescope/crds/.github/workflows/contexts.yml@master
+  romancal:
+    needs: [ environment, crds_contexts ]
     uses: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml@924441154cf3053034c6513d5e06c69d262fb9a6  # v1.13.0
     with:
+      setenv: |
+        CRDS_PATH: ${{ needs.environment.outputs.data_path }}/crds
+        CRDS_SERVER_URL: https://roman-crds.stsci.edu
+        CRDS_CLIENT_RETRY_COUNT: 3
+        CRDS_CLIENT_RETRY_DELAY_SECONDS: 20
+      cache-path: ${{ needs.environment.outputs.data_path }}/crds
+      cache-key: crds-${{ needs.crds_contexts.outputs.roman }}
       envs: |
-        - linux: withromancal
-          coverage: codecov
+        - linux: romancal
diff --git a/pyproject.toml b/pyproject.toml
index 325beef7..c01ff653 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ dependencies = [
     "asdf >=3.3.0",
     "asdf-astropy >=0.5.0",
     "gwcs >=0.19.0",
-    "numpy >=1.22",
+    "numpy >=1.24",
     "astropy >=5.3.0",
     "rad >=0.22.0, <0.23.0",
     # "rad @ git+https://github.com/spacetelescope/rad.git",
@@ -29,7 +29,7 @@ file = "LICENSE"
 test = [
     "pytest >=6.0.0",
     "pytest-doctestplus",
-    "pytest-doctestplus >=0.10.0",
+    "pytest-doctestplus >=1.2.1",
     "pytest-env >= 0.8",
 ]
 aws = ["stsci-aws-utils >= 0.1.2"]
@@ -63,7 +63,10 @@ minversion = 4.6
 doctest_plus = true
 doctest_rst = true
 text_file_format = "rst"
-addopts = "--color=yes --doctest-rst"
+addopts = [
+    "--color=yes",
+    "--doctest-rst",
+]
 testpaths = ["tests"]
 filterwarnings = [
     "error",
diff --git a/requirements-dev.txt b/requirements-dev.txt
index f42d2cc6..5cfb2054 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,11 +5,9 @@ git+https://github.com/asdf-format/asdf-wcs-schemas
 git+https://github.com/astropy/asdf-astropy
 
 # Use weekly astropy dev build
---extra-index-url https://pypi.anaconda.org/astropy/simple astropy --pre
---extra-index-url https://pypi.anaconda.org/liberfa/simple pyerfa --pre
+astropy>=0.0.dev0
+pyerfa>=0.0.dev0
 
-# Use Bi-weekly numpy/scipy dev builds
---extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
 numpy>=0.0.dev0
 scipy>=0.0.dev0
 
diff --git a/tox.ini b/tox.ini
index 5e0cb04a..aa381685 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,10 +1,12 @@
 [tox]
 env_list =
     check-{style,build}
-    test{,-devdeps}{,-pyargs,-cov}-xdist
+    test{,-devdeps}{,-pyargs,-cov}-xdist-withromancal
     test-numpy{120,121,122}-xdist
     build-{docs,dist}
-    withromancal
+    romancal
+requires =
+    tox-uv
 
 # tox environments are constructed with so-called 'factors' (or terms)
 # separated by hyphens, e.g. test-devdeps-cov. Lines below starting with factor:
@@ -14,6 +16,8 @@ env_list =
 #
 #     tox -l -v
 #
+[main]
+rcal_repo = https://github.com/spacetelescope/romancal.git
 
 [testenv:check-style]
 skip_install = true
@@ -32,27 +36,41 @@ description =
     warnings: treating warnings as errors
     cov: with coverage
     xdist: using parallel processing
+allowlist_externals =
+    git
 pass_env =
     CRDS_*
     HOME
     CI
     TOXENV
     CODECOV_*
+set_env =
+    devdeps: UV_INDEX = https://pypi.anaconda.org/liberfa/simple https://pypi.anaconda.org/astropy/simple https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
+    devdeps: UV_INDEX_STRATEGY = unsafe-any-match
 extras =
     test
+uv_resolution =
+    oldestdeps: lowest-direct
 deps =
+    withromancal: romancal @ git+{[main]rcal_repo}
     xdist: pytest-xdist
-    cov: pytest-cov
-    oldestdeps: minimum_dependencies
+    cov: pytest-cov >= 4.1.0
     rad: rad @ git+https://github.com/spacetelescope/rad.git@main#egg=rad
+    romancal: setuptools  # for pkg_resources for pysiaf
+    romancal: romancal[test] @ git+{[main]rcal_repo}
+    devdeps: -r requirements-dev.txt
+    oldestdeps: minimum_dependencies
+change_dir =
+    romancal: {env_tmp_dir}
 commands_pre =
-    oldestdeps: minimum_dependencies roman_datamodels --filename requirements-min.txt
-    oldestdeps: pip install -r requirements-min.txt
-    devdeps: pip install -r requirements-dev.txt -U --upgrade-strategy eager
-    pip freeze
+    oldestdeps: minimum_dependencies roman_datamodels --filename {env_tmp_dir}/requirements-min.txt
+    oldestdeps: uv pip install -r {env_tmp_dir}/requirements-min.txt
+    {list_dependencies_command}
+    romancal: git clone -n --depth=1 --filter=blob:none {[main]rcal_repo}
+    romancal: git --git-dir={envtmpdir}/romancal/.git checkout HEAD pyproject.toml
 commands =
     pytest \
-    warnings: -W error \
+    romancal: --config-file={env_tmp_dir}/pyproject.toml --pyargs romancal \
     xdist: -n auto \
     cov: --cov=roman_datamodels --cov=tests --cov-config pyproject.toml --cov-report term-missing --cov-report xml \
     {posargs}
@@ -70,19 +88,3 @@ deps =
     build
 commands =
     python -m build .
-
-[testenv:withromancal]
-allowlist_externals =
-    git
-    bash
-deps =
-    pytest-cov
-commands_pre =
-    bash -c "pip freeze -q | grep 'roman_datamodels @' > {env_tmp_dir}/requirements.txt"
-    pip install git+https://github.com/spacetelescope/romancal.git
-    pip install -r {env_tmp_dir}/requirements.txt
-    pip freeze
-commands =
-    pytest tests/test_open.py::test_open_asn \
-    --cov=tests --cov-config pyproject.toml --cov-report term-missing --cov-report xml \
-    {posargs}