diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2ed3666..cbc45b5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,7 +1,7 @@
 name: Go
 on:
   push:
-    branches: [ master ]
+    branches: [ main ]
     tags:
       - v*
   pull_request:
@@ -19,7 +19,8 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
-          go-version: 1.26
+          go-version: stable
+          check-latest: true
 
       - name: Vet
         run: go vet ./...
diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index e423a01..a3103bb 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -4,7 +4,7 @@ on:
     tags:
       - v*
     branches:
-      - master
+      - main
   pull_request:
 
 jobs:
@@ -17,4 +17,4 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v9
         with:
-          version: v2.11.2
+          version: v2.12.2
diff --git a/.golangci.yml b/.golangci.yml
index f8246ab..7ffbe82 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -3,7 +3,12 @@ run:
   tests: false
 linters:
   default: all
+  enable:
+    - wsl_v5
+    - gomodguard_v2
   disable:
+    - wsl
+    - gomodguard
     - cyclop
     - depguard
     - err113
diff --git a/alerts.go b/alerts.go
index 388a0cd..afc5661 100644
--- a/alerts.go
+++ b/alerts.go
@@ -6,7 +6,6 @@ import (
 
 	"github.com/NETWAYS/check_sophos_central/api"
 	"github.com/NETWAYS/go-check"
-	"github.com/NETWAYS/go-check/perfdata"
 )
 
 type AlertOverview struct {
@@ -80,7 +79,7 @@ func (o *AlertOverview) GetSummary() string {
 	return "alerts: " + strings.Join(states, ", ")
 }
 
-func (o *AlertOverview) GetStatus() int {
+func (o *AlertOverview) GetStatus() check.Status {
 	if o.High > 0 {
 		return check.Critical
 	} else if o.Medium > 0 || o.Low > 0 {
@@ -103,7 +102,7 @@ func (o *AlertOverview) GetOutput() (s string) {
 }
 
 func (o *AlertOverview) GetPerfdata() string {
-	tmp := perfdata.PerfdataList{
+	tmp := check.PerfdataList{
 		{Label: "alerts", Value: o.Total},
 		{Label: "alerts_high", Value: o.High},
 		{Label: "alerts_medium", Value: o.Medium},
diff --git a/check.go b/check.go
index 88f974c..0a830af 100644
--- a/check.go
+++ b/check.go
@@ -66,7 +66,7 @@ func (c *Config) Validate() error {
 	return nil
 }
 
-func (c *Config) Run() (rc int, output string, err error) {
+func (c *Config) Run() (rc check.Status, output string, err error) {
 	// Setup API client.
 	client := api.NewClient(c.ClientID, c.ClientSecret)
 	client.PageSize = c.PageSize
diff --git a/endpoints.go b/endpoints.go
index 32a304f..1351ee8 100644
--- a/endpoints.go
+++ b/endpoints.go
@@ -5,7 +5,6 @@ import (
 
 	"github.com/NETWAYS/check_sophos_central/api"
 	"github.com/NETWAYS/go-check"
-	"github.com/NETWAYS/go-check/perfdata"
 )
 
 type EndpointOverview struct {
@@ -70,7 +69,7 @@ func (o *EndpointOverview) GetSummary() (s string) {
 	return
 }
 
-func (o *EndpointOverview) GetStatus() int {
+func (o *EndpointOverview) GetStatus() check.Status {
 	// nolint: gocritic
 	if len(o.Bad) > 0 {
 		return check.Critical
@@ -104,7 +103,7 @@ func (o *EndpointOverview) GetOutput(limit int) (s string) {
 }
 
 func (o *EndpointOverview) GetPerfdata() string {
-	tmp := perfdata.PerfdataList{
+	tmp := check.PerfdataList{
 		{Label: "endpoints_total", Value: o.Total},
 		{Label: "endpoints_good", Value: len(o.Good)},
 		{Label: "endpoints_bad", Value: len(o.Bad)},
diff --git a/go.mod b/go.mod
index 3f6abb1..b303fb0 100644
--- a/go.mod
+++ b/go.mod
@@ -1,9 +1,9 @@
 module github.com/NETWAYS/check_sophos_central
 
-go 1.25.0
+go 1.26
 
 require (
-	github.com/NETWAYS/go-check v0.6.4
+	github.com/NETWAYS/go-check v1.0.0
 	github.com/jarcoal/httpmock v1.4.1
 	github.com/spf13/pflag v1.0.10
 	golang.org/x/oauth2 v0.36.0
diff --git a/go.sum b/go.sum
index 9d68e43..f55e3e3 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/NETWAYS/go-check v0.6.4 h1:4WETSVNZNEP0Yudcp5xlvxq6RGn920cmUKq4fz/P1GQ=
-github.com/NETWAYS/go-check v0.6.4/go.mod h1:8/GWnq8SirreAixgRmcp82JG16NnEl38rHq9phICy9s=
+github.com/NETWAYS/go-check v1.0.0 h1:YkzTwFfGR+Z+mK3Wsqpnu8wibzsB30im19iPNfCOsMQ=
+github.com/NETWAYS/go-check v1.0.0/go.mod h1:8/GWnq8SirreAixgRmcp82JG16NnEl38rHq9phICy9s=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/jarcoal/httpmock v1.4.1 h1:0Ju+VCFuARfFlhVXFc2HxlcQkfB+Xq12/EotHko+x2A=
diff --git a/main.go b/main.go
index 0b5cf5e..6633c2c 100644
--- a/main.go
+++ b/main.go
@@ -33,5 +33,5 @@ func main() {
 		check.ExitError(err)
 	}
 
-	check.ExitRaw(rc, output)
+	check.Exit(rc, output)
 }
diff --git a/main_test.go b/main_test.go
index 05908fe..870ae3c 100644
--- a/main_test.go
+++ b/main_test.go
@@ -2,6 +2,8 @@ package main
 
 import (
 	"testing"
+
+	"github.com/NETWAYS/go-check"
 )
 
 func TestMainCheck_matches(t *testing.T) {
@@ -80,23 +82,23 @@ func TestMainAlerts_GetOutput(t *testing.T) {
 func TestMainAlerts_GetStatus(t *testing.T) {
 	testcases := map[string]struct {
 		ao       AlertOverview
-		expected int
+		expected check.Status
 	}{
 		"simple-overview": {
 			ao:       AlertOverview{},
-			expected: 0,
+			expected: check.OK,
 		},
 		"simple-warning": {
 			ao: AlertOverview{
 				Medium: 1,
 			},
-			expected: 1,
+			expected: check.Warning,
 		},
 		"simple-critical": {
 			ao: AlertOverview{
 				High: 1,
 			},
-			expected: 2,
+			expected: check.Critical,
 		},
 	}