diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0051c3d..578608e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,9 +29,9 @@ jobs:
         run: go test -short -timeout 300s ./...
 
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v6
+        uses: golangci/golangci-lint-action@v8
         with:
-          version: latest
+          version: v2.12.2
           args: --allow-serial-runners --timeout 10m
 
       - name: staticcheck
diff --git a/internal/otel/metrics.go b/internal/otel/metrics.go
index 1690da9..1dd23eb 100644
--- a/internal/otel/metrics.go
+++ b/internal/otel/metrics.go
@@ -202,7 +202,7 @@ func MetricsHandler(metrics ...*SMTMetrics) http.HandlerFunc {
 			b.WriteString(m.PrometheusText())
 		}
 		w.Header().Set("Content-Type", "text/plain; version=0.0.4")
-		fmt.Fprint(w, b.String())
+		_, _ = fmt.Fprint(w, b.String())
 	}
 }