diff --git a/.github/workflows/CI-localjll.yml b/.github/workflows/CI-localjll.yml
index f1f123dea7..74e64565f7 100644
--- a/.github/workflows/CI-localjll.yml
+++ b/.github/workflows/CI-localjll.yml
@@ -9,7 +9,7 @@ on:
     branches:
       - main
       - release-*
-    tags: '*'
+    tags: ['*']
     paths:
       - '.github/workflows/CI-localjll.yml'
       - 'deps/**'
@@ -21,157 +21,23 @@ concurrency:
   cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
 
 jobs:
-  test:
-    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - local libReactant - ${{ github.event_name }}
-    runs-on: ${{ matrix.os }}
-    container:
-      image: ${{ contains(matrix.os, 'linux') && 'ghcr.io/enzymead/reactant-docker-images@sha256:7004a6ebbdd77bd047900b2bffc542e8576864056dc27a9c94d30666d6f7ea01' || '' }}
+  test-localjll:
     strategy:
       fail-fast: false
       matrix:
         version:
-          - '1.10'
-          - '1.11'
+          - "1.10"
+          - "1.11"
         os:
           - linux-x86-n2-32
           - macOS-latest
         exclude:
           - os: macOS-latest
-            version: '1.10'
-    steps:
-      - name: Free Disk Space
-        uses: jlumbroso/free-disk-space@main
-        with:
-          tool-cache: false
-        if: ${{ startsWith(matrix.os, 'ubuntu-') }}
-      - name: Clean `/opt`
-        run: sudo rm -rf /opt/*
-        if: ${{ startsWith(matrix.os, 'ubuntu-') }}
-      - uses: actions/checkout@v5
-      - name: Set and create TMPDIR
-        # We have to use `${GITHUB_WORKSPACE}` instead of `github.workspace` because GitHub
-        # is terrible and the two don't match inside containers:
-        # https://github.com/actions/runner/issues/2058
-        run: |
-          export TMPDIR="${GITHUB_WORKSPACE}/tmp"
-          echo "TMPDIR=${TMPDIR}" >> "${GITHUB_ENV}"
-
-          mkdir -pv "${TMPDIR}"
-      - uses: julia-actions/setup-julia@v2
-        with:
-          version: ${{ matrix.version }}
-      - name: Load Julia packages from cache
-        id: julia-cache
-        uses: julia-actions/cache@v2
-      - uses: bazel-contrib/setup-bazel@0.15.0
-        name: Set up Bazel
-        with:
-          # Avoid downloading Bazel every time.
-          bazelisk-cache: true
-          # Store build cache per workflow.
-          disk-cache: ${{ github.workflow }}-${{ matrix.os }}-${{ matrix.version }}
-          # Share repository cache between workflows.
-          repository-cache: true
-          bazelisk-version: 1.x
-      - name: Prepare build on macOS
-        if: ${{ startsWith(matrix.os, 'macOS-') }}
-        run: |
-          echo "SDKROOT=$(xcrun --show-sdk-path)" >> "${GITHUB_ENV}"
-      - name: Install numpy
-        if: ${{ startsWith(matrix.os, 'macOS-') }}
-        run: |
-          python -m pip install numpy
-      - name: Build libReactant
-        timeout-minutes: 120
-        run: |
-          julia --color=yes --project=deps -e 'using Pkg; Pkg.instantiate()'
-          julia --color=yes --project=deps deps/build_local.jl
-          cp LocalPreferences.toml test/
-      - name: "Setup Runtime Preferences"
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          Pkg.instantiate()
-          using Preferences
-          Preferences.set_preferences!("Reactant", "xla_runtime" => "PJRT"; force=true)
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-        env:
-          JULIA_PKG_PRECOMPILE_AUTO: 0
-      - name: "Install Dependencies"
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          # Install packages present in subdirectories
-          dev_pks = Pkg.PackageSpec[]
-          for path in ("lib/ReactantCore",)
-              push!(dev_pks, Pkg.PackageSpec(; path))
-          end
-          Pkg.develop(dev_pks)
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-        # Only in Julia v1.10 we need to install `ReactantCore` manually.
-        if: ${{ matrix.version == '1.10' }}
-        env:
-          JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
-      - name: "Run Tests: PJRT"
-        timeout-minutes: 200
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          Pkg.test(; coverage="user")
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-        env:
-          JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
-          XLA_FLAGS: "--xla_force_host_platform_device_count=12"
-          JULIA_DEBUG: "Reactant,Reactant_jll"
-      - name: Upload MLIR modules (PJRT)
-        uses: actions/upload-artifact@v4
-        timeout-minutes: 10
-        if: ${{ always() }}
-        with:
-          name: "mlir-localjll-PJRT-${{ matrix.version }}-${{ matrix.os }}-${{ github.event_name }}"
-          path: "**/*.mlir"
-          retention-days: 90
-          overwrite: false
-      - name: "Setup Runtime Preferences"
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          Pkg.instantiate()
-          using Preferences
-          Preferences.set_preferences!("Reactant", "xla_runtime" => "IFRT"; force=true)
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-        env:
-          JULIA_PKG_PRECOMPILE_AUTO: 0
-      - name: "Run Tests: IFRT"
-        timeout-minutes: 200
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          Pkg.test(; coverage="user")
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-        env:
-          JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
-          XLA_FLAGS: "--xla_force_host_platform_device_count=12"
-          JULIA_DEBUG: "Reactant,Reactant_jll"
-      - name: Upload MLIR modules (IFRT)
-        uses: actions/upload-artifact@v4
-        timeout-minutes: 10
-        if: ${{ always() }}
-        with:
-          name: "mlir-localjll-IFRT-${{ matrix.version }}-${{ matrix.os }}-${{ github.event_name }}"
-          path: "**/*.mlir"
-          retention-days: 90
-          overwrite: false
-      - name: Save Julia depot cache on cancel or failure
-        id: julia-cache-save
-        if: cancelled() || failure()
-        uses: actions/cache/save@v4
-        with:
-          path: |
-            ${{ steps.julia-cache.outputs.cache-paths }}
-          key: ${{ steps.julia-cache.outputs.cache-key }}
-      - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v5
-        with:
-          files: lcov.info
-          token: ${{ secrets.CODECOV_TOKEN }}
+            version: "1.10"
+    uses: ./.github/workflows/CommonCI.yml
+    with:
+      julia_version: ${{ matrix.version }}
+      os: ${{ matrix.os }}
+      runtime: "both"
+      assertions: false
+      localjll: true
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index c7ca2511cd..b60f801cbc 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -13,7 +13,7 @@ on:
     branches:
       - main
       - release-*
-    tags: "*"
+    tags: ["*"]
     paths:
       - ".github/workflows/CI.yml"
       - "ext/**"
@@ -30,11 +30,6 @@ concurrency:
 
 jobs:
   test:
-    timeout-minutes: 90
-    name: Julia ${{ matrix.version }} - ${{ matrix.test_group }} - ${{ matrix.os }} - ${{ matrix.runtime }} - assertions=${{ matrix.assertions }} - ${{ github.event_name }}
-    runs-on: ${{ matrix.os }}
-    container:
-      image: ${{ contains(matrix.os, 'linux') && 'ghcr.io/enzymead/reactant-docker-images:main' || '' }}
     strategy:
       fail-fast: false
       matrix:
@@ -52,137 +47,60 @@ jobs:
           # - macOS-13
           - macOS-latest
           - windows-latest
+          - linux-x86-ct6e-180-4tpu
         test_group:
           - core
           - neural_networks
           - integration
         runtime:
-          - "PJRT"
-          - "IFRT"
-        assertions:
-          - false
-        include:
+          - "pjrt"
+          - "ifrt"
+        exclude:
           - os: linux-x86-ct6e-180-4tpu
-            version: "1.11"
-            assertions: false
-            test_group: core
-            runtime: "IFRT"
-          - os: linux-x86-ct6e-180-4tpu
-            version: "1.11"
-            assertions: false
-            test_group: integration
-            runtime: "IFRT"
-          - os: linux-x86-ct6e-180-4tpu
-            version: "1.11"
-            assertions: false
-            test_group: neural_networks
-            runtime: "IFRT"
-          - os: ubuntu-24.04
-            version: "1.10"
-            assertions: true
-            test_group: core
-            runtime: "PJRT"
-          - os: ubuntu-24.04
-            version: "1.10"
-            assertions: true
-            test_group: neural_networks
-            runtime: "PJRT"
-          - os: ubuntu-24.04
             version: "1.10"
-            assertions: true
-            test_group: integration
-            runtime: "PJRT"
-          - os: ubuntu-24.04
-            libReactant: packaged
-            version: '1.10'
-            test_group: core
-          - os: ubuntu-24.04
-            libReactant: packaged
-            version: '1.10'
-            test_group: neural_networks
-          - os: ubuntu-24.04
-            libReactant: packaged
-            version: '1.10'
-            test_group: integration
-    steps:
-      - name: Set TMPDIR
-        # We have to use `${GITHUB_WORKSPACE}` instead of `github.workspace` because GitHub
-        # is terrible and the two don't match inside containers:
-        # https://github.com/actions/runner/issues/2058
-        
-        if: ${{ matrix.os != 'windows-latest' }}
-        run: |
-          echo "TMPDIR=${GITHUB_WORKSPACE}/tmp" >> ${GITHUB_ENV}
-      - uses: actions/checkout@v5
-      - name: Create TMPDIR
-        if: ${{ matrix.os != 'windows-latest' }}
-        run: |
-          mkdir -p ${{ env.TMPDIR }}
-      - uses: julia-actions/setup-julia@v2
-        if: ${{ ! matrix.assertions }}
-        with:
-          version: ${{ matrix.version }}
-      - uses: julia-actions/cache@v2
-      - uses: actions/checkout@v5
-        if: ${{ matrix.assertions }}
-        with:
-          repository: "JuliaLang/julia"
-          ref: release-${{ matrix.version }}
-          path: "julia"
-      - name: Compile Julia
-        if: ${{ matrix.assertions }}
-        run: |
-          sed -i.bak 's/exit 2/exit 0/g' julia/deps/tools/jlchecksum
-          make -C julia -j $(nproc) FORCE_ASSERTIONS=1 LLVM_ASSERTIONS=1 JULIA_PRECOMPILE=0
-          echo $PWD/julia/usr/bin >> $GITHUB_PATH
-      - name: "Setup Runtime Preferences"
-        uses: "DamianReeves/write-file-action@master"
-        with:
-          path: "LocalPreferences.toml"
-          write-mode: "overwrite"
-          contents: |
-            [Reactant]
-            xla_runtime = "${{ matrix.runtime }}"
-      - name: "Install Dependencies"
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          # Install packages present in subdirectories
-          dev_pks = Pkg.PackageSpec[]
-          for path in ("lib/ReactantCore",)
-              push!(dev_pks, Pkg.PackageSpec(; path))
-          end
-          Pkg.develop(dev_pks)
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-        # Only in Julia v1.10 we need to install `ReactantCore` manually.
-        if: ${{ matrix.version == '1.10' }}
-        env:
-          JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
-      - name: "Run Tests"
-        timeout-minutes: 60
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          Pkg.test(; coverage="user")
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-        id: run_tests
-        env:
-          JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
-          ENABLE_PJRT_COMPATIBILITY: 1
-          REACTANT_TEST_GROUP: ${{ matrix.test_group }}
-          XLA_FLAGS: "--xla_force_host_platform_device_count=12"
-          JULIA_DEBUG: "Reactant,Reactant_jll"
-      - name: Upload MLIR modules
-        uses: actions/upload-artifact@v4
-        timeout-minutes: 10
-        if: ${{ always() }}
-        with:
-          name: "mlir-${{ matrix.version }}-${{ matrix.test_group }}-${{ matrix.os }}-${{ matrix.runtime }}-assertions=${{ matrix.assertions }}-${{ github.event_name }}"
-          path: "**/*.mlir"
-          retention-days: 90
-          overwrite: false
-      - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v5
-        with:
-          files: lcov.info
-          token: ${{ secrets.CODECOV_TOKEN }}
+          - os: linux-x86-ct6e-180-4tpu
+            runtime: "pjrt"
+    uses: ./.github/workflows/CommonCI.yml
+    with:
+      julia_version: ${{ matrix.version }}
+      os: ${{ matrix.os }}
+      runtime: ${{ matrix.runtime }}
+      test_group: ${{ matrix.test_group }}
+
+  # This has been broken for a while, originating from CUDA.jl
+  # test-assertions:
+  #   strategy:
+  #     fail-fast: false
+  #     matrix:
+  #       version:
+  #         - "1.10"
+  #       test_group:
+  #         - core
+  #         - neural_networks
+  #         - integration
+  #   uses: ./.github/workflows/CommonCI.yml
+  #   with:
+  #     julia_version: ${{ matrix.version }}
+  #     os: "ubuntu-24.04"
+  #     runtime: "both"
+  #     assertions: true
+  #     test_group: ${{ matrix.test_group }}
+
+  downgrade:
+    strategy:
+      fail-fast: false
+      matrix:
+        test_group:
+          - core
+          - neural_networks
+          - integration
+        runtime:
+          - "pjrt"
+          - "ifrt"
+    uses: ./.github/workflows/CommonCI.yml
+    with:
+      julia_version: "1.10"
+      os: "ubuntu-24.04"
+      runtime: ${{ matrix.runtime }}
+      test_group: ${{ matrix.test_group }}
+      downgrade_testing: true
diff --git a/.github/workflows/CommonCI.yml b/.github/workflows/CommonCI.yml
new file mode 100644
index 0000000000..5bb654bf5d
--- /dev/null
+++ b/.github/workflows/CommonCI.yml
@@ -0,0 +1,214 @@
+name: Common Reactant CI Workflow
+
+on:
+  workflow_call:
+    inputs:
+      julia_version:
+        description: "Julia version"
+        required: true
+        type: string
+      os:
+        description: "OS"
+        required: true
+        type: string
+      runtime:
+        description: "XLA Runtime (pjrt | ifrt | both)"
+        required: true
+        type: string
+      assertions:
+        description: "Enable assertions"
+        required: false
+        default: false
+        type: boolean
+      localjll:
+        description: "Use local libReactant"
+        required: false
+        default: false
+        type: boolean
+      test_group:
+        description: "Test group"
+        required: false
+        default: "all"
+        type: string
+      downgrade_testing:
+        description: "Downgrade testing"
+        required: false
+        default: false
+        type: boolean
+
+jobs:
+  test:
+    runs-on: ${{ inputs.os }}
+    container:
+      image: ${{ contains(inputs.os, 'linux') && 'ghcr.io/enzymead/reactant-docker-images:main' || '' }}
+    steps:
+      - name: Free Disk Space
+        uses: jlumbroso/free-disk-space@main
+        with:
+          tool-cache: false
+        if: ${{ startsWith(inputs.os, 'ubuntu-') && inputs.localjll }}
+      - name: Clean `/opt`
+        run: sudo rm -rf /opt/*
+        if: ${{ startsWith(inputs.os, 'ubuntu-') && inputs.localjll }}
+
+      - uses: actions/checkout@v5
+
+      - name: Set TMPDIR and create directory
+        # We have to use `${GITHUB_WORKSPACE}` instead of `github.workspace` because GitHub
+        # is terrible and the two don't match inside containers:
+        # https://github.com/actions/runner/issues/2058
+        if: ${{ !startsWith(inputs.os, 'windows-') }}
+        run: |
+          export TMPDIR="${GITHUB_WORKSPACE}/tmp"
+          mkdir -p "$TMPDIR"
+          echo "TMPDIR=$TMPDIR" >> $GITHUB_ENV
+
+      - uses: julia-actions/setup-julia@v2
+        if: ${{ ! inputs.assertions }}
+        with:
+          version: ${{ inputs.julia_version }}
+      - uses: julia-actions/cache@v2
+        id: julia-cache
+        with:
+          cache-name: julia-cache;workflow=${{ inputs.julia_version }}-${{ inputs.os }}-${{ inputs.runtime }}-assertions=${{ inputs.assertions }}-${{ github.event_name }}-${{ inputs.test_group }}-${{ inputs.downgrade_testing }}-${{ inputs.localjll }}
+
+      - uses: julia-actions/julia-downgrade-compat@v2
+        if: ${{ inputs.downgrade_testing }}
+        with:
+          skip: "ReactantCore"
+          julia_version: ${{ inputs.julia_version }}
+
+      # Local build of libReactant
+      - uses: bazel-contrib/setup-bazel@0.15.0
+        if: ${{ inputs.localjll }}
+        name: Set up Bazel
+        with:
+          # Avoid downloading Bazel every time.
+          bazelisk-cache: true
+          # Store build cache per workflow.
+          disk-cache: ${{ github.workflow }}-${{ inputs.os }}-${{ inputs.julia_version }}
+          # Share repository cache between workflows.
+          repository-cache: true
+          bazelisk-version: 1.x
+      - name: Prepare build on macOS
+        if: ${{ startsWith(inputs.os, 'macOS-') && inputs.localjll }}
+        run: |
+          echo "SDKROOT=$(xcrun --show-sdk-path)" >> "${GITHUB_ENV}"
+      - name: Install numpy
+        if: ${{ startsWith(inputs.os, 'macOS-') && inputs.localjll }}
+        run: |
+          python -m pip install numpy
+      - name: Build libReactant
+        timeout-minutes: 120
+        if: ${{ inputs.localjll }}
+        run: |
+          julia --color=yes --project=deps -e 'using Pkg; Pkg.instantiate()'
+          julia --color=yes --project=deps deps/build_local.jl
+          cp LocalPreferences.toml test/
+
+      # Compile Julia if assertions are enabled
+      - uses: actions/checkout@v5
+        if: ${{ inputs.assertions }}
+        with:
+          repository: "JuliaLang/julia"
+          ref: release-${{ inputs.julia_version }}
+          path: "julia"
+      - name: Compile Julia
+        if: ${{ inputs.assertions }}
+        run: |
+          sed -i.bak 's/exit 2/exit 0/g' julia/deps/tools/jlchecksum
+          make -C julia -j $(nproc) FORCE_ASSERTIONS=1 LLVM_ASSERTIONS=1 JULIA_PRECOMPILE=0
+          echo $PWD/julia/usr/bin >> $GITHUB_PATH
+
+      # Install dependencies (specifically ReactantCore subdirectory for 1.10)
+      - name: "Install Dependencies"
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          # Install packages present in subdirectories
+          dev_pks = Pkg.PackageSpec[]
+          for path in ("lib/ReactantCore",)
+              push!(dev_pks, Pkg.PackageSpec(; path))
+          end
+          Pkg.develop(dev_pks)
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
+        # Only in Julia v1.10 we need to install `ReactantCore` manually.
+        if: ${{ inputs.julia_version == '1.10' || inputs.julia_version == 'lts' }}
+
+      # Run the tests (pjrt or ifrt or both)
+      - name: "Setup Runtime Preferences (PJRT)"
+        if: ${{ inputs.runtime == 'pjrt' || inputs.runtime == 'both' }}
+        uses: "DamianReeves/write-file-action@master"
+        with:
+          path: "LocalPreferences.toml"
+          write-mode: "overwrite"
+          contents: |
+            [Reactant]
+            xla_runtime = "PJRT"
+      - name: "Run Tests (PJRT)"
+        if: ${{ inputs.runtime == 'pjrt' || inputs.runtime == 'both' }}
+        timeout-minutes: 120
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          Pkg.test(;
+            coverage="user",
+            allow_reresolve=parse(Bool, get(ENV, "ALLOW_RERESOLVE", "true"))
+          )
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
+        env:
+          ALLOW_RERESOLVE: ${{ !inputs.downgrade_testing }}
+          REACTANT_TEST_GROUP: ${{ inputs.test_group }}
+
+      - name: "Setup Runtime Preferences (IFRT)"
+        if: ${{ inputs.runtime == 'ifrt' || inputs.runtime == 'both' }}
+        uses: "DamianReeves/write-file-action@master"
+        with:
+          path: "LocalPreferences.toml"
+          write-mode: "overwrite"
+          contents: |
+            [Reactant]
+            xla_runtime = "IFRT"
+      - name: "Run Tests (IFRT)"
+        if: ${{ inputs.runtime == 'ifrt' || inputs.runtime == 'both' }}
+        timeout-minutes: 120
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          Pkg.test(;
+            coverage="user",
+            allow_reresolve=parse(Bool, get(ENV, "ALLOW_RERESOLVE", "true"))
+          )
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
+        env:
+          ALLOW_RERESOLVE: ${{ !inputs.downgrade_testing }}
+          REACTANT_TEST_GROUP: ${{ inputs.test_group }}
+
+      - name: "Upload MLIR modules"
+        uses: actions/upload-artifact@v4
+        timeout-minutes: 10
+        if: always()
+        with:
+          name: "mlir-${{ inputs.julia_version }}-${{ inputs.os }}-${{ inputs.runtime }}-assertions=${{ inputs.assertions }}-${{ github.event_name }}-test_group=${{ inputs.test_group }}-${{ inputs.localjll }}"
+          path: "**/*.mlir"
+          retention-days: 90
+          overwrite: false
+
+      - name: Save Julia depot cache on cancel or failure
+        if: cancelled() || failure()
+        uses: actions/cache/save@v4
+        with:
+          path: |
+            ${{ steps.julia-cache.outputs.cache-paths }}
+          key: ${{ steps.julia-cache.outputs.cache-key }}
+
+      - uses: julia-actions/julia-processcoverage@v1
+      - uses: codecov/codecov-action@v5
+        with:
+          files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+
+env:
+  JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
+  XLA_FLAGS: "--xla_force_host_platform_device_count=12"
+  JULIA_DEBUG: "Reactant,Reactant_jll"
diff --git a/.github/workflows/downgrade.yml b/.github/workflows/downgrade.yml
deleted file mode 100644
index 8f30a32878..0000000000
--- a/.github/workflows/downgrade.yml
+++ /dev/null
@@ -1,96 +0,0 @@
-name: Downgrade
-
-on:
-  pull_request:
-    branches:
-      - main
-    paths:
-      - '.github/workflows/downgrade.yml'
-      - 'ext/**'
-      - 'lib/**'
-      - 'src/**'
-      - 'Project.toml'
-  push:
-    branches:
-      - main
-    paths:
-      - '.github/workflows/downgrade.yml'
-      - 'ext/**'
-      - 'lib/**'
-      - 'src/**'
-      - 'Project.toml'
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  downgrade:
-    # if: ${{ !contains(github.event.head_commit.message, '[skip tests]') && github.base_ref == github.event.repository.default_branch }}
-    timeout-minutes: 90
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        test_group:
-          - core
-          - neural_networks
-          - integration
-        runtime:
-          - PJRT
-          - IFRT
-    env:
-      TMPDIR: ${{ github.workspace }}/tmp
-    steps:
-      - uses: actions/checkout@v5
-      - name: Create TMPDIR
-        run: |
-          mkdir -p ${{ env.TMPDIR }}
-      - uses: julia-actions/setup-julia@v2
-        with:
-          version: "1.10"
-      - uses: julia-actions/cache@v2
-      - uses: julia-actions/julia-downgrade-compat@v2
-        with:
-          skip: "ReactantCore"
-      - name: "Setup Runtime Preferences"
-        uses: "DamianReeves/write-file-action@master"
-        with:
-          path: "LocalPreferences.toml"
-          write-mode: "overwrite"
-          contents: |
-            [Reactant]
-            xla_runtime = "${{ matrix.runtime }}"
-      - name: "Install Dependencies and Run Tests"
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          # Install packages present in subdirectories
-          dev_pks = Pkg.PackageSpec[]
-          for path in ("lib/ReactantCore",)
-              push!(dev_pks, Pkg.PackageSpec(; path))
-          end
-          Pkg.develop(dev_pks)
-          Pkg.test(; coverage="user", allow_reresolve=false)
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-        id: run_tests
-        env:
-          JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
-          REACTANT_TEST_GROUP: ${{ matrix.test_group }}
-          XLA_FLAGS: "--xla_force_host_platform_device_count=12"
-          JULIA_DEBUG: "Reactant,Reactant_jll"
-      - name: Upload MLIR modules
-        uses: actions/upload-artifact@v4
-        timeout-minutes: 10
-        if: ${{ always() }}
-        with:
-          name: "mlir-downgrade-${{ matrix.test_group }}-${{ matrix.runtime }}-${{ github.event_name }}"
-          path: "**/*.mlir"
-          retention-days: 90
-          overwrite: false
-      - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v5
-        with:
-          files: lcov.info
diff --git a/test/Project.toml b/test/Project.toml
index 9b2dc1873c..05b1e8906a 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -18,7 +18,6 @@ KernelAbstractions = "63c18a36-062a-441e-b654-da1e3ab1ce7c"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 Lux = "b2108857-7c20-44ae-9111-449ecde12c47"
 LuxLib = "82251201-b29d-42c6-8e01-566dec8acb11"
-MLUtils = "f1d291b0-491e-4a28-83b9-f70985020b54"
 MethodAnalysis = "85b6ec6f-f7df-4429-9514-a64bcd9ee824"
 NNlib = "872c559c-99b0-510c-b3b7-b6c96a88d5cd"
 OffsetArrays = "6fe1bfb0-de20-5000-8ca7-80f57d26f881"
@@ -54,7 +53,6 @@ KernelAbstractions = "0.9.30"
 LinearAlgebra = "1.10"
 Lux = "1.21"
 LuxLib = "1.11"
-MLUtils = "0.4.4"
 NNlib = "0.9.26"
 OffsetArrays = "1"
 OneHotArrays = "0.2.6"