diff --git a/src/slic3r/GUI/DeviceManager.cpp b/src/slic3r/GUI/DeviceManager.cpp
index 661e1f1fe..45c7be24c 100644
--- a/src/slic3r/GUI/DeviceManager.cpp
+++ b/src/slic3r/GUI/DeviceManager.cpp
@@ -1505,6 +1505,8 @@ int MachineObject::command_request_push_all(bool request_now)
     json j;
     j["pushing"]["sequence_id"] = std::to_string(MachineObject::m_sequence_id++);
     j["pushing"]["command"]     = "pushall";
+    j["pushing"]["version"]     =  1;
+    j["pushing"]["push_target"] =  1;
     return this->publish_json(j.dump());
 }
 
@@ -4348,8 +4350,27 @@ void DeviceManager::set_agent(NetworkAgent* agent)
     m_agent = agent;
 }
 
+void DeviceManager::keep_alive()
+{
+    MachineObject* obj = this->get_selected_machine();
+    if (obj) {
+        if (obj->keep_alive_count == 0) {
+            obj->last_keep_alive = std::chrono::system_clock::now();
+        }
+        obj->keep_alive_count++;
+        std::chrono::system_clock::time_point start = std::chrono::system_clock::now();
+        auto internal = std::chrono::duration_cast<std::chrono::milliseconds>(start - obj->last_keep_alive);
+        if (internal.count() > TIMEOUT_FOR_KEEPALIVE && internal.count() < 1000 * 60 * 60 * 300) {
+            BOOST_LOG_TRIVIAL(info) << "keep alive = " << internal.count() << ", count = " << obj->keep_alive_count;
+            obj->command_request_push_all();
+            obj->last_keep_alive = start;
+        }
+    }
+}
+
 void DeviceManager::check_pushing()
 {
+    keep_alive();
     MachineObject* obj = this->get_selected_machine();
     if (obj && !obj->is_support_mqtt_alive) {
         std::chrono::system_clock::time_point start = std::chrono::system_clock::now();
diff --git a/src/slic3r/GUI/DeviceManager.hpp b/src/slic3r/GUI/DeviceManager.hpp
index e6d085f1e..fa901c348 100644
--- a/src/slic3r/GUI/DeviceManager.hpp
+++ b/src/slic3r/GUI/DeviceManager.hpp
@@ -19,6 +19,7 @@
 #define DISCONNECT_TIMEOUT      30000.f     // milliseconds
 #define PUSHINFO_TIMEOUT        15000.f     // milliseconds
 #define TIMEOUT_FOR_STRAT       20000.f     // milliseconds
+#define TIMEOUT_FOR_KEEPALIVE   5* 60 * 1000.f     // milliseconds
 #define REQUEST_PUSH_MIN_TIME   15000.f     // milliseconds
 #define REQUEST_START_MIN_TIME  15000.f     // milliseconds
 #define EXTRUSION_OMIT_TIME     20000.f     // milliseconds
@@ -460,7 +461,9 @@ public:
     void set_lan_mode_connection_state(bool state) {m_lan_mode_connection_state = state;};
     bool get_lan_mode_connection_state() {return m_lan_mode_connection_state;};
     int  parse_msg_count = 0;
+    int  keep_alive_count = 0;
     std::chrono::system_clock::time_point   last_update_time;   /* last received print data from machine */
+    std::chrono::system_clock::time_point   last_keep_alive;    /* last received print data from machine */
     std::chrono::system_clock::time_point   last_push_time;     /* last received print push from machine */
     std::chrono::system_clock::time_point   last_request_push;  /* last received print push from machine */
     std::chrono::system_clock::time_point   last_request_start; /* last received print push from machine */
@@ -895,6 +898,7 @@ public:
     std::map<std::string, MachineObject*> localMachineList;     /* dev_id -> MachineObject*, localMachine SSDP   */
     std::map<std::string, MachineObject*> userMachineList;      /* dev_id -> MachineObject*  cloudMachine of User */
 
+    void keep_alive();
     void check_pushing();
 
     MachineObject* get_default_machine();