diff --git a/.github/workflows/codecov_testonly.yml b/.github/workflows/codecov_testonly.yml
index 0401aba..9dcdbe7 100644
--- a/.github/workflows/codecov_testonly.yml
+++ b/.github/workflows/codecov_testonly.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        go: [1.15, 1.16, 1.17]
+        go: [1.15, 1.16, 1.17, 1.18]
     steps:
     - name: Checkout Code
       uses: actions/checkout@master