diff --git a/.github/workflows/tester.yml b/.github/workflows/tester.yml
index ad03aa1..951b677 100644
--- a/.github/workflows/tester.yml
+++ b/.github/workflows/tester.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: ['10.x', '12.x', '14.x', '15']
+        node-version: ['10', '12', '14', '15']
       fail-fast: false
     steps:
       - uses: actions/checkout@v2