diff --git a/.env b/.env
index 45476a2..174ba3e 100644
--- a/.env
+++ b/.env
@@ -23,7 +23,7 @@ STELLIO_TIMESCALE_POSTGIS=16-2.14.2-3.4
 CURL_VERSION=8.4.0
 
 # IoT Agent Ultralight Variables
-ULTRALIGHT_VERSION=3.3.0-distroless
+ULTRALIGHT_VERSION=3.4.0-distroless
 IOTA_NORTH_PORT=4041
 IOTA_SOUTH_PORT=7896
 
diff --git a/README.ja.md b/README.ja.md
index ec9ee9b..0d83bea 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -623,6 +623,7 @@ curl -L -X POST 'http://localhost:4041/iot/devices' \
       "device_id": "temperature001",
       "entity_name": "urn:ngsi-ld:Device:temperature001",
       "entity_type": "Device",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "timezone": "Europe/Berlin",
       "attributes": [
         {
@@ -818,6 +819,7 @@ curl -L -X POST 'http://localhost:4041/iot/devices' \
       "device_id": "water001",
       "entity_name": "urn:ngsi-ld:Device:water001",
       "entity_type": "Device",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "protocol": "PDI-IoTA-UltraLight",
       "transport": "HTTP",
       "endpoint": "http://iot-sensors:3001/iot/water001",
@@ -928,6 +930,7 @@ curl -L -X POST 'http://localhost:4041/iot/devices' \
       "device_id": "filling001",
       "entity_name": "urn:ngsi-ld:Device:filling001",
       "entity_type": "FillingLevelSensor",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "protocol": "PDI-IoTA-UltraLight",
       "transport": "HTTP",
       "endpoint": "http://iot-sensors:3001/iot/filling001",
@@ -986,6 +989,7 @@ curl -L -X POST 'http://localhost:4041/iot/devices' \
       "device_id": "tractor001",
       "entity_name": "urn:ngsi-ld:Device:tractor001",
       "entity_type": "Tractor",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "protocol": "PDI-IoTA-UltraLight",
       "transport": "HTTP",
       "endpoint": "http://iot-sensors:3001/iot/tractor001",
@@ -1347,6 +1351,7 @@ curl -iX POST 'http://localhost:4041/iot/devices' \
       "device_id": "water002",
       "entity_name": "urn:ngsi-ld:Device:water002",
       "entity_type": "Device",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "protocol": "PDI-IoTA-UltraLight",
       "transport": "HTTP",
       "endpoint": "http://iot-sensors:3001/iot/water002",
@@ -1398,6 +1403,7 @@ curl -X GET \
     "service_path": "/",
     "entity_name": "urn:ngsi-ld:Device:water002",
     "entity_type": "Device",
+    "apikey": "4jggokgpepnvsb2uv4s40d59ov",
     "endpoint": "http://iot-sensors:3001/iot/water002",
     "transport": "HTTP",
     "attributes": [],
@@ -1456,6 +1462,7 @@ curl -X GET \
           "service_path": "/",
           "entity_name": "urn:ngsi",
           "entity_type": "Device",
+          "apikey": "4jggokgpepnvsb2uv4s40d59ov",
           "endpoint": "http://iot-sensors:3001/iot/water002",
           "transport": "HTTP",
           "attributes": [],
diff --git a/README.md b/README.md
index 0fadfa7..b6ee753 100644
--- a/README.md
+++ b/README.md
@@ -608,6 +608,7 @@ curl -L -X POST 'http://localhost:4041/iot/devices' \
       "device_id": "temperature001",
       "entity_name": "urn:ngsi-ld:Device:temperature001",
       "entity_type": "Device",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "timezone": "Europe/Berlin",
       "attributes": [
         {
@@ -803,6 +804,7 @@ curl -L -X POST 'http://localhost:4041/iot/devices' \
       "device_id": "water001",
       "entity_name": "urn:ngsi-ld:Device:water001",
       "entity_type": "Device",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "protocol": "PDI-IoTA-UltraLight",
       "transport": "HTTP",
       "endpoint": "http://iot-sensors:3001/iot/water001",
@@ -911,6 +913,7 @@ curl -L -X POST 'http://localhost:4041/iot/devices' \
       "device_id": "filling001",
       "entity_name": "urn:ngsi-ld:Device:filling001",
       "entity_type": "FillingLevelSensor",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "protocol": "PDI-IoTA-UltraLight",
       "transport": "HTTP",
       "endpoint": "http://iot-sensors:3001/iot/filling001",
@@ -966,6 +969,7 @@ curl -L -X POST 'http://localhost:4041/iot/devices' \
       "device_id": "tractor001",
       "entity_name": "urn:ngsi-ld:Device:tractor001",
       "entity_type": "Tractor",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "protocol": "PDI-IoTA-UltraLight",
       "transport": "HTTP",
       "endpoint": "http://iot-sensors:3001/iot/tractor001",
@@ -1300,6 +1304,7 @@ curl -iX POST 'http://localhost:4041/iot/devices' \
       "device_id": "water002",
       "entity_name": "urn:ngsi-ld:Device:water002",
       "entity_type": "Device",
+      "apikey": "4jggokgpepnvsb2uv4s40d59ov",
       "protocol": "PDI-IoTA-UltraLight",
       "transport": "HTTP",
       "endpoint": "http://iot-sensors:3001/iot/water002",
@@ -1348,6 +1353,7 @@ The response includes all the commands and attributes mappings associated with t
     "service_path": "/",
     "entity_name": "urn:ngsi-ld:Device:water002",
     "entity_type": "Device",
+    "apikey": "4jggokgpepnvsb2uv4s40d59ov",
     "endpoint": "http://iot-sensors:3001/iot/water002",
     "transport": "HTTP",
     "attributes": [],
@@ -1403,6 +1409,7 @@ The response includes all the commands and attributes mappings associated with a
           "service_path": "/",
           "entity_name": "urn:ngsi",
           "entity_type": "Device",
+          "apikey": "4jggokgpepnvsb2uv4s40d59ov",
           "endpoint": "http://iot-sensors:3001/iot/water002",
           "transport": "HTTP",
           "attributes": [],