diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index cb764d4..5cdc86f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,19 +13,19 @@ jobs:
   test:
     strategy:
       matrix:
-        os: ['ubuntu-18.04', 'ubuntu-20.04', 'ubuntu-22.04']
+        os: ['ubuntu-20.04', 'ubuntu-22.04']
 
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2 # respository path: $GITHUB_WORKSPACE
       - uses: actions/setup-go@v2
         with:
-          go-version: 1.16.2
+          go-version: 1.21
 
       - name: Install golint
-        run: go get -u golang.org/x/lint/golint
+        run: go install golang.org/x/lint/golint@latest
       - name: Install goyacc
-        run: go get golang.org/x/tools/cmd/goyacc
+        run: go install golang.org/x/tools/cmd/goyacc@latest
 
       - name: Install libvirt
         run: |