diff --git a/.github/workflows/all.yml b/.github/workflows/all.yml
index c923785..10ca8ce 100644
--- a/.github/workflows/all.yml
+++ b/.github/workflows/all.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: ["ubuntu-latest", "macOS-latest"]
-        go: ["1.19.x", "1.20.x", "1.21.x"]
+        go: ["1.21.x"]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/setup-go@v3