diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1f8011ad..48448735 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -141,7 +141,7 @@ jobs:
     name: lint
     runs-on: ubuntu-latest
     env:
-      GOLANGCI_LINT_VERSION: v1.55.2
+      GOLANGCI_LINT_VERSION: v1.56
     permissions:
       contents: read
       # allow read access to pull request. Use with `only-new-issues` option.
@@ -157,31 +157,31 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Lint
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v4
         with:
           version: ${{ env.GOLANGCI_LINT_VERSION }}
           working-directory: .
 
       - name: Lint cmd/river
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v4
         with:
           version: ${{ env.GOLANGCI_LINT_VERSION }}
           working-directory: ./cmd/river
 
       - name: Lint riverdriver
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v4
         with:
           version: ${{ env.GOLANGCI_LINT_VERSION }}
           working-directory: ./riverdriver
 
       - name: Lint riverdriver/riverdatabasesql
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v4
         with:
           version: ${{ env.GOLANGCI_LINT_VERSION }}
           working-directory: ./riverdriver/riverdatabasesql
 
       - name: Lint riverdriver/riverpgxv5
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v4
         with:
           version: ${{ env.GOLANGCI_LINT_VERSION }}
           working-directory: ./riverdriver/riverpgxv5
diff --git a/internal/rivercommon/test_signal_test.go b/internal/rivercommon/test_signal_test.go
index 898452da..ff0dd1a0 100644
--- a/internal/rivercommon/test_signal_test.go
+++ b/internal/rivercommon/test_signal_test.go
@@ -44,7 +44,7 @@ func TestTestSignal(t *testing.T) {
 }
 
 // Marked as non-parallel because `t.Setenv` is not compatible with `t.Parallel`.
-func TestWaitTimeout(t *testing.T) { //nolint:paralleltest
+func TestWaitTimeout(t *testing.T) {
 	t.Setenv("GITHUB_ACTIONS", "")
 	require.Equal(t, 3*time.Second, WaitTimeout())