diff --git a/.github/workflows/test-actions.yml b/.github/workflows/test-actions.yml
index ef91d37..fee51d8 100644
--- a/.github/workflows/test-actions.yml
+++ b/.github/workflows/test-actions.yml
@@ -31,13 +31,22 @@ jobs:
     steps:
       - uses: actions/checkout@fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09 # v5.1.0
       - uses: ./actions/go-test
+        env:
+          # setup-go exports local; reset it so each action honors the toolchain.
+          GOTOOLCHAIN: auto
         with:
           working-directory: tests/fixtures/minimal
       - uses: ./actions/go-test
+        env:
+          # setup-go exports local; reset it so each action honors the toolchain.
+          GOTOOLCHAIN: auto
         with:
           working-directory: tests/fixtures/minimal
           target: test-cover
       - uses: ./actions/go-lint
+        env:
+          # setup-go exports local; reset it so each action honors the toolchain.
+          GOTOOLCHAIN: auto
         with:
           working-directory: tests/fixtures/minimal
 
diff --git a/actions/go-lint/action.yml b/actions/go-lint/action.yml
index 445c910..8224bde 100644
--- a/actions/go-lint/action.yml
+++ b/actions/go-lint/action.yml
@@ -28,5 +28,5 @@ runs:
         fi
     - uses: golangci/golangci-lint-action@ba0d7d2ec06a0ea1cb5fa41b2e4a3ab91d21278a # v9.3.0
       with:
-        version: v2.12.2
+        version: v2.15.0
         working-directory: ${{ inputs.working-directory }}
diff --git a/tests/fixtures/minimal/go.mod b/tests/fixtures/minimal/go.mod
index 85bc041..4c61997 100644
--- a/tests/fixtures/minimal/go.mod
+++ b/tests/fixtures/minimal/go.mod
@@ -1,3 +1,5 @@
 module example.com/minimal
 
 go 1.26
+
+toolchain go1.27.4