diff --git a/.github/workflows/ci-go.yml b/.github/workflows/ci-go.yml
index 1a9b7520..84b662a5 100644
--- a/.github/workflows/ci-go.yml
+++ b/.github/workflows/ci-go.yml
@@ -28,7 +28,7 @@ jobs:
     strategy:
       matrix:
         go-version: [ '1.25', '1.24' ]
-        terraform: ${{ fromJSON(vars.TF_VERSIONS_PROTOCOL_V5) }}
+        terraform: ['1.15.0-alpha20260204']
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
@@ -42,6 +42,16 @@ jobs:
       - run: go test -v -coverprofile=coverage.out ./...
         env:
           TF_ACC: "1"
+          TF_LOG: "TRACE"
+          TF_ACC_LOG: "TRACE"
+          TF_LOG_PATH_MASK: "${{ github.workspace }}/%s.log"
+      - name: Upload test logs on failure
+        if: failure()
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        with:
+          name: go-${{ matrix.go-version }}-terraform-${{ matrix.terraform }}-test-logs
+          path: "**/*.log"
+          if-no-files-found: warn
       - name: Remove wildcard suffix from TF version
         id: tf_version
         run: |