diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 5559f20a..0a4dc053 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -20,12 +20,12 @@ jobs:
     name: Test
     strategy:
       matrix:
-        go-version: [1.18.x, 1.19.x, 1.20.x]
+        go-version: [1.20.x, 1.21.x]
         os: [ubuntu-latest]
         include:
-          - go-version: 1.20.x
+          - go-version: 1.21.x
             os: macos-latest
-          - go-version: 1.20.x
+          - go-version: 1.21.x
             os: windows-latest
     runs-on: ${{ matrix.os }}
     steps:
@@ -59,7 +59,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v4
       with:
-        go-version: 1.20.x
+        go-version: 1.21.x
     - name: Regenerate
       run: ./generate
     - name: Check whether generated output is current