diff --git a/CHANGELOG.md b/CHANGELOG.md
index fd7232d..b4810bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## FIWARE Small Bang v0.4.0-next
 
--   Update Quantumleap 1.0.0 (#13)
+-   Update IoT Agent for UltraLight to 3.4.0 (#39)
+-   Update Quantumleap 1.0.0 (#38)
 -   Remove version property from docker compose files (#37)
 -   Support Ubuntu 24.04 (#36)
 -   Bump codecov/codecov-action from 1 to 4 (#35)
diff --git a/docs/en/after-installation.md b/docs/en/after-installation.md
index 46df95f..bf01a47 100644
--- a/docs/en/after-installation.md
+++ b/docs/en/after-installation.md
@@ -221,10 +221,10 @@ ngsi version --host iotagent.local --pretty
 
 ```json
 {
-  "libVersion": "3.2.0",
+  "libVersion": "4.4.0",
   "port": "4041",
   "baseRoot": "/",
-  "version": "2.2.0"
+  "version": "3.4.0"
 }
 ```
 
diff --git a/docs/en/examples/iotagent-ul.md b/docs/en/examples/iotagent-ul.md
index 2e4c124..a06d9d2 100644
--- a/docs/en/examples/iotagent-ul.md
+++ b/docs/en/examples/iotagent-ul.md
@@ -40,10 +40,10 @@ ngsi version --host iotagent-ul.local --pretty
 
 ```json
 {
-  "libVersion": "3.2.0",
+  "libVersion": "4.4.0",
   "port": "4041",
   "baseRoot": "/",
-  "version": "2.2.0"
+  "version": "3.4.0"
 }
 ```
 
diff --git a/docs/ja/after-installation.md b/docs/ja/after-installation.md
index 92e46d6..8c7335b 100644
--- a/docs/ja/after-installation.md
+++ b/docs/ja/after-installation.md
@@ -239,10 +239,10 @@ ngsi version --host iotagent-ul.local --pretty
 
 ```json
 {
-  "libVersion": "3.2.0",
+  "libVersion": "4.4.0",
   "port": "4041",
   "baseRoot": "/",
-  "version": "2.2.0"
+  "version": "3.4.0"
 }
 ```
 
diff --git a/docs/ja/examples/iotagent-ul.md b/docs/ja/examples/iotagent-ul.md
index 4c02300..022d8b0 100644
--- a/docs/ja/examples/iotagent-ul.md
+++ b/docs/ja/examples/iotagent-ul.md
@@ -42,10 +42,10 @@ ngsi version --host iotagent-ul.local --pretty
 
 ```json
 {
-  "libVersion": "3.2.0",
+  "libVersion": "4.4.0",
   "port": "4041",
   "baseRoot": "/",
-  "version": "2.2.0"
+  "version": "3.4.0"
 }
 ```
 
diff --git a/setup-fiware.sh b/setup-fiware.sh
index ba0d55d..167f851 100755
--- a/setup-fiware.sh
+++ b/setup-fiware.sh
@@ -314,7 +314,7 @@ set_amd64_images() {
   IMAGE_NGSIPROXY=quay.io/fiware/ngsiproxy:1.2.2
   IMAGE_COMET=telefonicaiot/fiware-sth-comet:2.11.0
   IMAGE_CYGNUS=telefonicaiot/fiware-cygnus:3.8.0
-  IMAGE_IOTAGENT_UL=telefonicaiot/iotagent-ul:2.4.2
+  IMAGE_IOTAGENT_UL=telefonicaiot/iotagent-ul:3.4.0
   IMAGE_IOTAGENT_JSON=telefonicaiot/iotagent-json:2.4.2
   IMAGE_QUANTUMLEAP=orchestracities/quantumleap:1.0.0
   IMAGE_PERSEO_CORE=telefonicaiot/perseo-core:1.13.0
@@ -331,7 +331,7 @@ set_arm64_images() {
   IMAGE_NGSIPROXY=letsfiware/ngsiproxy:1.2.2
   IMAGE_COMET=letsfiware/sth-comet:2.11.0
   IMAGE_CYGNUS=letsfiware/fiware-cygnus:3.8.0
-  IMAGE_IOTAGENT_UL=letsfiware/iotagent-ul:2.4.2
+  IMAGE_IOTAGENT_UL=letsfiware/iotagent-ul:3.4.0
   IMAGE_IOTAGENT_JSON=letsfiware/iotagent-json:2.4.2
   IMAGE_QUANTUMLEAP=letsfiware/quantumleap:1.0.0
   IMAGE_PERSEO_CORE=letsfiware/perseo-core:1.13.0