diff --git a/.github/workflows/Tier1.yml b/.github/workflows/Tier1.yml
new file mode 100644
index 0000000..2d53133
--- /dev/null
+++ b/.github/workflows/Tier1.yml
@@ -0,0 +1,39 @@
+name: Tier 1
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'LICENSE.md'
+      - 'README.md'
+      - '.github/**'
+      - 'docs/**'
+      - 'validation/**'
+      - 'test/validation**'
+      - 'change.log'
+      - '.gitignore'
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - 'LICENSE.md'
+      - 'README.md'
+jobs:
+  ci:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        julia-version: [1.5, 1.6]
+        julia-arch: [x64]
+        os: [ubuntu-18.04, macos-10.15, windows-2019]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.julia-version }}
+      - uses: julia-actions/julia-buildpkg@v0.1
+      - uses: julia-actions/julia-runtest@v0.1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - uses: julia-actions/julia-uploadcodecov@v0.1
+        if:  ${{ startsWith(matrix.os, 'Ubuntu') && startsWith(matrix.julia-version, '1.5') }}