diff --git a/client.go b/client.go
index 4dea413..16ec091 100644
--- a/client.go
+++ b/client.go
@@ -26,6 +26,18 @@ type Client struct {
 // with the given credential
 // for the given testrail domain
 func NewClient(url, username, password string, useBetaApi ...bool) (c *Client) {
+	_useBetaApi := false
+	if len(useBetaApi) > 0 {
+		_useBetaApi = useBetaApi[0]
+	}
+	return NewCustomClient(url, username, password, nil, _useBetaApi)
+}
+
+// NewClient returns a new client with
+// with the given credential
+// for the given testrail domain
+// and custom http Client
+func NewCustomClient(url, username, password string, customHttpClient *http.Client, useBetaApi ...bool) (c *Client) {
 	c = &Client{}
 	c.username = username
 	c.password = password
@@ -36,7 +48,11 @@ func NewClient(url, username, password string, useBetaApi ...bool) (c *Client) {
 	}
 	c.url += "index.php?/api/v2/"
 
-	c.httpClient = &http.Client{}
+	if customHttpClient != nil {
+		c.httpClient = customHttpClient
+	} else {
+		c.httpClient = &http.Client{}
+	}
 
 	if len(useBetaApi) > 0 {
 		c.useBetaApi = useBetaApi[0]
diff --git a/client_test.go b/client_test.go
index ba37291..68d2b06 100644
--- a/client_test.go
+++ b/client_test.go
@@ -36,8 +36,7 @@ func newResponse(body string) *http.Response {
 func TestSendRequest(t *testing.T) {
 	testClient(t)
 
-	c := NewClient("http://example.com", "testUsername", "testPassword")
-	c.httpClient = NewTestClient(newResponse(`{ "status_id": 1 }`), nil)
+	c := NewCustomClient("http://example.com", "testUsername", "testPassword", NewTestClient(newResponse(`{ "status_id": 1 }`), nil))
 
 	testValidGetRequest(t, c)
 	testInvalidGetRequest(t, c)