diff --git a/.github/workflows/UnitTest.yml b/.github/workflows/UnitTest.yml
index 2190fc3..ff31182 100644
--- a/.github/workflows/UnitTest.yml
+++ b/.github/workflows/UnitTest.yml
@@ -9,22 +9,38 @@ on:
   pull_request:
   workflow_dispatch:
 
+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:
   test:
+    name: Julia ${{ matrix.julia-version }}-${{ matrix.julia-arch }} - ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
+    permissions: # needed to allow julia-actions/cache to proactively delete old caches that it has created
+      actions: write
+      contents: read
     strategy:
       fail-fast: false
       matrix:
-        julia-version: ['1.6', '1']
-        os: [ubuntu-latest, windows-latest, macos-13]
+        # tier 1: ubuntu-[x86|x64], windows-[x86|x64], macos-[x64|aarch64]
+        # tier 2: ubuntu-arm-[aarch64]
+        julia-version: ['lts', '1']
+        os: [ubuntu-latest, windows-latest, macos-15-intel]
         julia-arch: [x64]
         include:
           - os: ubuntu-latest # only test one 32-bit job
             julia-version: '1'
             julia-arch: x86
-          - os: macos-latest
+          - os: ubuntu-24.04-arm
             julia-version: '1'
             julia-arch: aarch64
+          # macOS-aarch64 x ['lts', '1']
+          - os: macos-latest
+            julia-version: 'lts'
+            julia-arch: aarch64
           - os: macos-latest
             julia-version: '1'
             julia-arch: aarch64
@@ -36,11 +52,9 @@ jobs:
         with:
           version: ${{ matrix.julia-version }}
           arch: ${{ matrix.julia-arch }}
-      - name: Cache artifacts
-        uses: julia-actions/cache@v2
-      - name: "Unit Test"
-        uses: julia-actions/julia-runtest@v1
-
+      - uses: julia-actions/cache@v2
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v5
         with:
diff --git a/.github/workflows/UnitTestArm.yml b/.github/workflows/UnitTestArm.yml
deleted file mode 100644
index 037fe2e..0000000
--- a/.github/workflows/UnitTestArm.yml
+++ /dev/null
@@ -1,76 +0,0 @@
-name: Unit test for Arm
-
-on:
-  push:
-    branches:
-      - master
-      - release-*
-    tags: ['*']
-  pull_request:
-  workflow_dispatch:
-permissions:
-  actions: write
-  contents: read
-jobs:
-  test:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        julia-version: ['1.0', '1.6', '1', 'nightly']
-        os: [ubuntu-latest]
-        distro: [ubuntu_latest]
-        arch: [aarch64]
-
-    steps:
-      - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v2
-        with:
-          version: ${{ matrix.julia-version }}
-      - uses: julia-actions/cache@v2
-      - name: Download Julia Binary
-        run: >
-          julia -e '
-            using Pkg; Pkg.add("JSON"); using JSON;
-            if "${{ matrix.julia-version }}" == "nightly";
-              url = "https://julialangnightlies-s3.julialang.org/bin/linux/${{ matrix.arch }}/julia-latest-linux-${{ matrix.arch }}.tar.gz";
-            else;
-              path = download("https://julialang-s3.julialang.org/bin/versions.json");
-              json = JSON.parsefile(path);
-              try rm(path) catch end;
-              vspec = Pkg.Types.VersionSpec("${{ matrix.julia-version }}");
-              a(f) = f["arch"] == "${{ matrix.arch }}" && f["os"] == "linux" && !occursin("musl", f["triplet"]);
-              m = filter(json) do v; vn = VersionNumber(v[1]); vn in vspec && isempty(vn.prerelease) && any(a, v[2]["files"]); end;
-              v = sort(VersionNumber.(keys(m)))[end];
-              url = filter(a, json[string(v)]["files"])[1]["url"];
-            end;
-            download(url, "/tmp/julia-aarch64.tar.gz");'
-
-      - name: Extract Julia Files
-        run: |
-          mkdir -p /home/runner/work/julia/
-          tar -xf /tmp/julia-aarch64.tar.gz --strip-components=1 -C /home/runner/work/julia/
-          rm /tmp/julia-aarch64.tar.gz
-
-      - uses: uraimo/run-on-arch-action@v2.7.2
-        name: Unit Test
-        with:
-          arch: ${{ matrix.arch }}
-          distro: ${{ matrix.distro }}
-          dockerRunArgs: |
-            -v "/home/runner/work/julia:/home/runner/work/julia"
-            -v "/home/runner/.julia/registries:/root/.julia/registries"
-            --net=host
-          install: |
-            ln -s /home/runner/work/julia/bin/julia /usr/local/bin/julia
-            echo /home/runner/work/julia/lib > /etc/ld.so.conf.d/julia.conf
-            mkdir -p /root/.julia/registries/General
-          run: |
-            julia --compile=min -O0 -e 'using InteractiveUtils; versioninfo();'
-            julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.build(); Pkg.test(coverage=true)'
-      - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v5
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }} # required
-          fail_ci_if_error: true
-          files: lcov.info