diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index e28ecfe..567faab 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -26,7 +26,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x, 16.x]
+        node-version: [14.x, 15.x, 16.x]
 
     steps:
     - uses: actions/checkout@v2