diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ad0ccb5..cb1e847 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go-version: [stable, oldstable]
+        go-version: ['', 'stable']
         os: [macos-latest, windows-latest, ubuntu-latest]
 
     steps:
@@ -19,6 +19,7 @@ jobs:
       uses: actions/setup-go@v5
       with:
         go-version: ${{matrix.go-version}}
+        go-version-file: go.mod
 
     - name: Check out module
       uses: actions/checkout@v2