diff --git a/sdrbase/resources/webapi/doc/html2/index.html b/sdrbase/resources/webapi/doc/html2/index.html
index e059944f5..40d126c29 100644
--- a/sdrbase/resources/webapi/doc/html2/index.html
+++ b/sdrbase/resources/webapi/doc/html2/index.html
@@ -6915,6 +6915,13 @@ margin-bottom: 20px;
       "type" : "integer",
       "format" : "uint16"
     },
+    "multicastAddress" : {
+      "type" : "string"
+    },
+    "multicastJoin" : {
+      "type" : "integer",
+      "description" : "Joim multicast group * 0 - leave group * 1 - join group\n"
+    },
     "title" : {
       "type" : "string"
     },
@@ -33305,7 +33312,7 @@ except ApiException as e:
           </div>
           <div id="generator">
             <div class="content">
-              Generated 2020-08-20T08:53:46.594+02:00
+              Generated 2020-08-25T00:09:04.978+02:00
             </div>
           </div>
       </div>
diff --git a/sdrbase/resources/webapi/doc/swagger/include/UDPSource.yaml b/sdrbase/resources/webapi/doc/swagger/include/UDPSource.yaml
index 129d240ac..641de4ddc 100644
--- a/sdrbase/resources/webapi/doc/swagger/include/UDPSource.yaml
+++ b/sdrbase/resources/webapi/doc/swagger/include/UDPSource.yaml
@@ -47,6 +47,14 @@ UDPSourceSettings:
     udpPort:
       type: integer
       format: uint16
+    multicastAddress:
+      type: string
+    multicastJoin:
+      type: integer
+      description: >
+        Joim multicast group
+        * 0 - leave group
+        * 1 - join group
     title:
       type: string
     streamIndex:
diff --git a/swagger/sdrangel/code/html2/index.html b/swagger/sdrangel/code/html2/index.html
index e059944f5..40d126c29 100644
--- a/swagger/sdrangel/code/html2/index.html
+++ b/swagger/sdrangel/code/html2/index.html
@@ -6915,6 +6915,13 @@ margin-bottom: 20px;
       "type" : "integer",
       "format" : "uint16"
     },
+    "multicastAddress" : {
+      "type" : "string"
+    },
+    "multicastJoin" : {
+      "type" : "integer",
+      "description" : "Joim multicast group * 0 - leave group * 1 - join group\n"
+    },
     "title" : {
       "type" : "string"
     },
@@ -33305,7 +33312,7 @@ except ApiException as e:
           </div>
           <div id="generator">
             <div class="content">
-              Generated 2020-08-20T08:53:46.594+02:00
+              Generated 2020-08-25T00:09:04.978+02:00
             </div>
           </div>
       </div>
diff --git a/swagger/sdrangel/code/qt5/client/SWGUDPSourceSettings.cpp b/swagger/sdrangel/code/qt5/client/SWGUDPSourceSettings.cpp
index 6e35a6f56..b979a1dbc 100644
--- a/swagger/sdrangel/code/qt5/client/SWGUDPSourceSettings.cpp
+++ b/swagger/sdrangel/code/qt5/client/SWGUDPSourceSettings.cpp
@@ -64,6 +64,10 @@ SWGUDPSourceSettings::SWGUDPSourceSettings() {
     m_udp_address_isSet = false;
     udp_port = 0;
     m_udp_port_isSet = false;
+    multicast_address = nullptr;
+    m_multicast_address_isSet = false;
+    multicast_join = 0;
+    m_multicast_join_isSet = false;
     title = nullptr;
     m_title_isSet = false;
     stream_index = 0;
@@ -122,6 +126,10 @@ SWGUDPSourceSettings::init() {
     m_udp_address_isSet = false;
     udp_port = 0;
     m_udp_port_isSet = false;
+    multicast_address = new QString("");
+    m_multicast_address_isSet = false;
+    multicast_join = 0;
+    m_multicast_join_isSet = false;
     title = new QString("");
     m_title_isSet = false;
     stream_index = 0;
@@ -160,6 +168,10 @@ SWGUDPSourceSettings::cleanup() {
         delete udp_address;
     }
 
+    if(multicast_address != nullptr) { 
+        delete multicast_address;
+    }
+
     if(title != nullptr) { 
         delete title;
     }
@@ -220,6 +232,10 @@ SWGUDPSourceSettings::fromJsonObject(QJsonObject &pJson) {
     
     ::SWGSDRangel::setValue(&udp_port, pJson["udpPort"], "qint32", "");
     
+    ::SWGSDRangel::setValue(&multicast_address, pJson["multicastAddress"], "QString", "QString");
+    
+    ::SWGSDRangel::setValue(&multicast_join, pJson["multicastJoin"], "qint32", "");
+    
     ::SWGSDRangel::setValue(&title, pJson["title"], "QString", "QString");
     
     ::SWGSDRangel::setValue(&stream_index, pJson["streamIndex"], "qint32", "");
@@ -304,6 +320,12 @@ SWGUDPSourceSettings::asJsonObject() {
     if(m_udp_port_isSet){
         obj->insert("udpPort", QJsonValue(udp_port));
     }
+    if(multicast_address != nullptr && *multicast_address != QString("")){
+        toJsonValue(QString("multicastAddress"), multicast_address, obj, QString("QString"));
+    }
+    if(m_multicast_join_isSet){
+        obj->insert("multicastJoin", QJsonValue(multicast_join));
+    }
     if(title != nullptr && *title != QString("")){
         toJsonValue(QString("title"), title, obj, QString("QString"));
     }
@@ -509,6 +531,26 @@ SWGUDPSourceSettings::setUdpPort(qint32 udp_port) {
     this->m_udp_port_isSet = true;
 }
 
+QString*
+SWGUDPSourceSettings::getMulticastAddress() {
+    return multicast_address;
+}
+void
+SWGUDPSourceSettings::setMulticastAddress(QString* multicast_address) {
+    this->multicast_address = multicast_address;
+    this->m_multicast_address_isSet = true;
+}
+
+qint32
+SWGUDPSourceSettings::getMulticastJoin() {
+    return multicast_join;
+}
+void
+SWGUDPSourceSettings::setMulticastJoin(qint32 multicast_join) {
+    this->multicast_join = multicast_join;
+    this->m_multicast_join_isSet = true;
+}
+
 QString*
 SWGUDPSourceSettings::getTitle() {
     return title;
@@ -638,6 +680,12 @@ SWGUDPSourceSettings::isSet(){
         if(m_udp_port_isSet){
             isObjectUpdated = true; break;
         }
+        if(multicast_address && *multicast_address != QString("")){
+            isObjectUpdated = true; break;
+        }
+        if(m_multicast_join_isSet){
+            isObjectUpdated = true; break;
+        }
         if(title && *title != QString("")){
             isObjectUpdated = true; break;
         }
diff --git a/swagger/sdrangel/code/qt5/client/SWGUDPSourceSettings.h b/swagger/sdrangel/code/qt5/client/SWGUDPSourceSettings.h
index 7147355a0..825f9a5bc 100644
--- a/swagger/sdrangel/code/qt5/client/SWGUDPSourceSettings.h
+++ b/swagger/sdrangel/code/qt5/client/SWGUDPSourceSettings.h
@@ -96,6 +96,12 @@ public:
     qint32 getUdpPort();
     void setUdpPort(qint32 udp_port);
 
+    QString* getMulticastAddress();
+    void setMulticastAddress(QString* multicast_address);
+
+    qint32 getMulticastJoin();
+    void setMulticastJoin(qint32 multicast_join);
+
     QString* getTitle();
     void setTitle(QString* title);
 
@@ -175,6 +181,12 @@ private:
     qint32 udp_port;
     bool m_udp_port_isSet;
 
+    QString* multicast_address;
+    bool m_multicast_address_isSet;
+
+    qint32 multicast_join;
+    bool m_multicast_join_isSet;
+
     QString* title;
     bool m_title_isSet;