diff --git a/handler/handler_test.go b/handler/handler_test.go
index 13dd37d..5401a6e 100644
--- a/handler/handler_test.go
+++ b/handler/handler_test.go
@@ -5,6 +5,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"math"
 	"net"
 	"net/http"
 	"net/http/httptest"
@@ -596,6 +597,18 @@ func Test_updateDialContext(t *testing.T) {
 				}).DialContext,
 			},
 		},
+		{
+			name: "check if dialContext.timeout is negative, timeout is math.MaxInt64",
+			args: args{
+				cfg:         &http.Transport{},
+				dialTimeout: -1,
+			},
+			want: &http.Transport{
+				DialContext: (&net.Dialer{
+					Timeout: math.MaxInt64,
+				}).DialContext,
+			},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {