diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d2a995e..a2b8e6d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,9 +15,16 @@ jobs:
     strategy:
       matrix:
         version:
+          - '1.0'
           - '1'
+          - 'nightly'
         os:
           - ubuntu-latest
+        include:
+          - os: windows-latest
+            version: '1'
+          - os: macOS-latest
+            version: '1'
     steps:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@v1