diff --git a/README.md b/README.md
index 0abed96e..3909ae29 100644
--- a/README.md
+++ b/README.md
@@ -112,6 +112,7 @@ Configurable properties :
 ### Other configurations
 | Key | Default | Description |
 | --------------------- | ------- | ------------------------------------------------------------------ |
+| `logging.structured.format.console` | `` | Format for structured logging. Valid values : `ecs`, `gelf`, `logstash`. Leave empty for no structured logging (default). See https://docs.spring.io/spring-boot/reference/features/logging.html#features.logging.structured  |
 | `springdoc.swagger-ui.path` | `/` | Open API (swagger) UI path |
 | `springdoc.swagger-ui.oauth.clientId` | `` | clientid used by swagger to authenticate the user, in general the same which is used by onyxia-ui is ok. |
 
diff --git a/helm-wrapper/pom.xml b/helm-wrapper/pom.xml
index f624ca9b..1f09338d 100644
--- a/helm-wrapper/pom.xml
+++ b/helm-wrapper/pom.xml
@@ -14,10 +14,6 @@
     <name>helm-wrapper</name>
     <description>Simple wrapper for Helm (https://helm.sh)</description>
 
-    <properties>
-        <java.version>21</java.version>
-    </properties>
-
     <distributionManagement>
         <snapshotRepository>
             <id>ossrh</id>
diff --git a/onyxia-api/pom.xml b/onyxia-api/pom.xml
index 30ed8597..f44d5720 100644
--- a/onyxia-api/pom.xml
+++ b/onyxia-api/pom.xml
@@ -128,11 +128,14 @@
             <groupId>org.apache.httpcomponents.client5</groupId>
             <artifactId>httpclient5</artifactId>
         </dependency>
-    </dependencies>
 
-    <properties>
-        <java.version>21</java.version>
-    </properties>
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>mockwebserver</artifactId>
+            <version>4.12.0</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 
     <build>
         <plugins>
diff --git a/onyxia-api/src/main/resources/application.properties b/onyxia-api/src/main/resources/application.properties
index 89b1f15e..35b7686b 100644
--- a/onyxia-api/src/main/resources/application.properties
+++ b/onyxia-api/src/main/resources/application.properties
@@ -42,5 +42,8 @@ event.webhook.includes=
 event.webhook.excludes=
 # Response stream configuration
 spring.mvc.async.request-timeout=600000
-# Enabled admin endpoints
+# Use structured logging (see https://docs.spring.io/spring-boot/reference/features/logging.html#features.logging.structured)
+# Supported formats : ecs, gelf, logstash
+#logging.structured.format.console=gelf
+# Enable admin endpoints
 admin.enabled=false
diff --git a/onyxia-model/pom.xml b/onyxia-model/pom.xml
index c136f14b..1eab109d 100644
--- a/onyxia-model/pom.xml
+++ b/onyxia-model/pom.xml
@@ -10,10 +10,6 @@
         <artifactId>onyxia</artifactId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
-    <properties>
-        <maven.compiler.source>21</maven.compiler.source>
-        <maven.compiler.target>21</maven.compiler.target>
-    </properties>
     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>
diff --git a/pom.xml b/pom.xml
index bcffb92f..8d58377e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.3.4</version>
+        <version>3.4.0</version>
     </parent>
     <modules>
         <module>onyxia-model</module>
@@ -21,8 +21,8 @@
     </distributionManagement>
     <properties>
         <fabric8io.version>6.13.4</fabric8io.version>
-        <maven.compiler.source>21</maven.compiler.source>
-        <maven.compiler.target>21</maven.compiler.target>
+        <maven.compiler.release>21</maven.compiler.release>
+        <java.version>21</java.version>
     </properties>
 
     <dependencyManagement>