diff --git a/hm_pyhelper/constants/diagnostics.py b/hm_pyhelper/constants/diagnostics.py
index 2d59846..51d46fa 100644
--- a/hm_pyhelper/constants/diagnostics.py
+++ b/hm_pyhelper/constants/diagnostics.py
@@ -9,3 +9,4 @@
 FREQUENCY_KEY = 'FREQ'
 SERIAL_NUMBER_KEY = 'serial_number'
 BALENA_DEVICE_ID_KEY = 'BALENA_DEVICE_UUID'
+DISK_IMAGE_KEY = 'disk_image'
diff --git a/hm_pyhelper/constants/nebra.py b/hm_pyhelper/constants/nebra.py
new file mode 100644
index 0000000..62f1f39
--- /dev/null
+++ b/hm_pyhelper/constants/nebra.py
@@ -0,0 +1,4 @@
+# Nebra maker address from Helium
+# https://onboarding.dewi.org/api/v2/makers
+NEBRA_WALLET_ADDRESS = '13Zni1he7KY9pUmkXMhEhTwfUpL9AcEV1m2UbbvFsrU9QPTMgE3'
+NEBRA_JSON_FILEPATH = '/nebra.json'
diff --git a/hm_pyhelper/constants/shipping.py b/hm_pyhelper/constants/shipping.py
index 758aacb..4aea491 100644
--- a/hm_pyhelper/constants/shipping.py
+++ b/hm_pyhelper/constants/shipping.py
@@ -1,2 +1,3 @@
 DESTINATION_NAME_KEY = 'shipping_destination_label'
 DESTINATION_ADD_GATEWAY_TXN_KEY = 'shipping_destination_add_gateway_txn'
+DESTINATION_WALLETS_KEY = 'shipping_destination_wallets'
diff --git a/setup.py b/setup.py
index 4fc853b..03fa0fc 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 
 setup(
     name='hm_pyhelper',
-    version='0.13.5',
+    version='0.13.6',
     author="Nebra Ltd",
     author_email="support@nebra.com",
     description="Helium Python Helper",