diff --git a/README.md b/README.md
index 9b29a7c..797d5b5 100644
--- a/README.md
+++ b/README.md
@@ -35,11 +35,15 @@ client:
         method: GET
         # Timeout is in millisecond, default is 0 (no timeout)
         timeout: 1000
-        # Status to check, default 200
+        # Headers is the HTTP headers to use
         headers:
           Accept: application/json
           Content-Type: application/json
           Authorization: Bearer ABCDEFG
+        # BasicAuth is the basic auth to use
+        basicAuth:
+          username: "username"
+          password: "password"
       respond:
         # Status to check, default 200
         status: 200
diff --git a/internal/model/rest.go b/internal/model/rest.go
index 35dcce1..e71ddda 100644
--- a/internal/model/rest.go
+++ b/internal/model/rest.go
@@ -21,6 +21,13 @@ type RestCheckBody struct {
 	Map *string `json:"map" yaml:"map"`
 }
 
+type RestBasicAuth struct {
+	// Username is the username
+	Username string `json:"username" yaml:"username"`
+	// Password is the password
+	Password string `json:"password" yaml:"password"`
+}
+
 type RestRequest struct {
 	// URL could be multiple URLs, separated by space
 	URL string `json:"url" yaml:"url"`
@@ -30,6 +37,8 @@ type RestRequest struct {
 	Timeout int `json:"timeout" yaml:"timeout"`
 	// Headers is the HTTP headers to be used
 	Headers map[string]string `json:"headers" yaml:"headers"`
+	// BasicAuth is the basic auth to be used
+	BasicAuth *RestBasicAuth `json:"basicAuth" yaml:"basicAuth"`
 }
 
 type RestRespond struct {
diff --git a/internal/route/rest/call_test.go b/internal/route/rest/call_test.go
index 6f1db5f..08034ef 100644
--- a/internal/route/rest/call_test.go
+++ b/internal/route/rest/call_test.go
@@ -50,7 +50,7 @@ func TestRequest(t *testing.T) {
 					Request: model.RestRequest{
 						Timeout: 2,
 						Method:  "GET",
-						URL:     "/abc /xyz",
+						URL:     "/abc /xyz /def /a /b /c /d /e /f /g /h /i /j /k /l /m /n /o /p /q /r /s /t /u /v /w /x /y /z",
 					},
 					Respond: model.RestRespond{
 						Status: 200,
@@ -69,7 +69,7 @@ func TestRequest(t *testing.T) {
 			args: args{
 				check: &model.RestCheck{
 					Request: model.RestRequest{
-						URL:     "/abc /xyz",
+						URL:     "/abc /xyz /def /a /b /c /d /e /f /g /h /i /j /k /l /m /n /o /p /q /r /s /t /u /v /w /x /y /z",
 						Method:  "GET",
 						Timeout: 2,
 					},
@@ -78,7 +78,7 @@ func TestRequest(t *testing.T) {
 					},
 				},
 			},
-			concurrent: 2,
+			concurrent: 20,
 			want:       `status code: 502; want: 200`,
 			wantIn:     true,
 			handler: func(w http.ResponseWriter, r *http.Request) {
@@ -117,8 +117,12 @@ func TestRequest(t *testing.T) {
 	}
 
 	var handlerFunc = func(w http.ResponseWriter, r *http.Request) {}
+	mx := sync.RWMutex{}
 
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		mx.RLock()
+		defer mx.RUnlock()
+
 		if handlerFunc != nil {
 			handlerFunc(w, r)
 		}
@@ -130,7 +134,10 @@ func TestRequest(t *testing.T) {
 			errs := &registry.Errors{}
 			reg := registry.NewClientReg(errs, nil)
 
+			mx.Lock()
 			handlerFunc = tt.handler
+			mx.Unlock()
+
 			urls := strings.Split(tt.args.check.Request.URL, " ")
 			for i, url := range urls {
 				urls[i] = fmt.Sprintf("%s%s", srv.URL, url)
diff --git a/internal/route/rest/client.go b/internal/route/rest/client.go
index 53129ea..1d2d419 100644
--- a/internal/route/rest/client.go
+++ b/internal/route/rest/client.go
@@ -78,6 +78,11 @@ func (c *ClientHolder) DoRequest(ctx context.Context, timeout time.Duration, url
 		req.Header.Set(k, v)
 	}
 
+	// add basic auth
+	if m.Request.BasicAuth != nil {
+		req.SetBasicAuth(m.Request.BasicAuth.Username, m.Request.BasicAuth.Password)
+	}
+
 	resp, err := c.Client.Do(req)
 	if err != nil {
 		return fmt.Errorf("%s, doing request: %w", urlV, err)
diff --git a/testdata/testBasic.yaml b/testdata/testBasic.yaml
new file mode 100644
index 0000000..411ca21
--- /dev/null
+++ b/testdata/testBasic.yaml
@@ -0,0 +1,13 @@
+log_level: "warn"
+client:
+  rest:
+  - concurrent: 1
+    check:
+    - request:
+        url: "http://httpbin.org/basic-auth/user/passwd"
+        timeout: 1000
+        basicAuth:
+          username: "user"
+          password: "passwd"
+      respond:
+        status: 200