diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8791e0496..e97cfa920 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -71,7 +71,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-2016] # , windows-2019
+        os: [windows-2016, windows-2019]
     steps:
     - uses: actions/checkout@v2
       with: