diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 487f862..136d461 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        go: ["1.21", "1.20", "1.19"]
+        go: ["1.21"]
         platform: [ubuntu-latest] # can not run in windows OS
     runs-on: ${{ matrix.platform }}