diff --git a/src/FirmwarePlugin/APM/APMFirmwarePlugin.cc b/src/FirmwarePlugin/APM/APMFirmwarePlugin.cc
index 481181c1c807..24cc1ce89b1f 100644
--- a/src/FirmwarePlugin/APM/APMFirmwarePlugin.cc
+++ b/src/FirmwarePlugin/APM/APMFirmwarePlugin.cc
@@ -742,6 +742,9 @@ QString APMFirmwarePlugin::_internalParameterMetaDataFile(Vehicle* vehicle)
         return QStringLiteral(":/FirmwarePlugin/APM/APMParameterFactMetaData.Rover.3.4.xml");
 
     case MAV_TYPE_SUBMARINE:
+        if (vehicle->versionCompare(4, 5, 0) >= 0) { // 4.5.x
+            return QStringLiteral(":/FirmwarePlugin/APM/APMParameterFactMetaData.Sub.4.5.xml");
+        }
         if (vehicle->versionCompare(4, 1, 0) >= 0) { // 4.1.x
             return QStringLiteral(":/FirmwarePlugin/APM/APMParameterFactMetaData.Sub.4.1.xml");
         }
diff --git a/src/FirmwarePlugin/APM/APMResources.qrc b/src/FirmwarePlugin/APM/APMResources.qrc
index 27a8ba52ecd9..9bb45373c305 100644
--- a/src/FirmwarePlugin/APM/APMResources.qrc
+++ b/src/FirmwarePlugin/APM/APMResources.qrc
@@ -67,6 +67,7 @@
         <file alias="APMParameterFactMetaData.Sub.3.6.xml">ArduPilot-Parameter-Repository/Sub-3.6/apm.pdef.xml</file>
         <file alias="APMParameterFactMetaData.Sub.4.0.xml">ArduPilot-Parameter-Repository/Sub-4.0/apm.pdef.xml</file>
         <file alias="APMParameterFactMetaData.Sub.4.1.xml">ArduPilot-Parameter-Repository/Sub-4.1/apm.pdef.xml</file>
+        <file alias="APMParameterFactMetaData.Sub.4.5.xml">ArduPilot-Parameter-Repository/Sub-4.5/apm.pdef.xml</file>
         <file alias="Copter.OfflineEditing.params">Copter3.6.OfflineEditing.params</file>
         <file alias="Plane.OfflineEditing.params">Plane3.9.OfflineEditing.params</file>
         <file alias="Rover.OfflineEditing.params">Rover3.5.OfflineEditing.params</file>
diff --git a/src/FirmwarePlugin/APM/ArduPilot-Parameter-Repository b/src/FirmwarePlugin/APM/ArduPilot-Parameter-Repository
index 772370ab665f..e2755f994af7 160000
--- a/src/FirmwarePlugin/APM/ArduPilot-Parameter-Repository
+++ b/src/FirmwarePlugin/APM/ArduPilot-Parameter-Repository
@@ -1 +1 @@
-Subproject commit 772370ab665fd7a7edcfe488f1c900a1d7d3a4a9
+Subproject commit e2755f994af751eb0219c98064b861303ef962b1