diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index de8dc8b..6ec5f89 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,11 +5,11 @@ jobs:
     name: Build
     strategy:
       matrix:
-        go: [1.13, 1.14]
+        go: ["1.20", "1.21"]
     runs-on: ubuntu-latest
-    container: golang:${{ matrix.go }}-stretch
+    container: golang:${{ matrix.go }}-bookworm
     steps:
-    - run: go get golang.org/x/tools/cmd/goimports
-    - run: go get golang.org/x/lint/golint
+    - run: go install golang.org/x/tools/cmd/goimports@latest
+    - run: go install golang.org/x/lint/golint@latest
     - uses: actions/checkout@v1
     - run: ./gotest.sh