diff --git a/client/http/http_client_test.go b/client/http/http_client_test.go
index 51efa8a..4bd3143 100644
--- a/client/http/http_client_test.go
+++ b/client/http/http_client_test.go
@@ -79,7 +79,7 @@ func TestClientRetryFailure(t *testing.T) {
 	l.Close()
 
 	go func() {
-		time.Sleep(2 * time.Second)
+		time.Sleep(3 * time.Second)
 
 		l, err := net.Listen("tcp", fmt.Sprintf("localhost:%d", port))
 		if err != nil {
diff --git a/servers/servers_test.go b/servers/servers_test.go
index 5ce0fb9..8b3f479 100644
--- a/servers/servers_test.go
+++ b/servers/servers_test.go
@@ -17,6 +17,7 @@ import (
 	"strings"
 	"sync"
 	"testing"
+	"time"
 )
 
 var (
@@ -200,6 +201,7 @@ func TestWithRecoverFunc(t *testing.T) {
 	}
 
 	<-m.serving
+	time.Sleep(time.Second)
 
 	mu.Lock()
 	defer mu.Unlock()