diff --git a/client/deployment/pom.xml b/client/deployment/pom.xml
index bfe4270e..438bee44 100644
--- a/client/deployment/pom.xml
+++ b/client/deployment/pom.xml
@@ -11,7 +11,7 @@
   <name>Quarkus - OpenAPI Generator - Client - Deployment</name>
 
   <properties>
-    <version.org.openapitools>7.14.0</version.org.openapitools>
+    <version.org.openapitools>7.15.0</version.org.openapitools>
     <version.org.slf4j>2.0.17</version.org.slf4j>
     <version.com.github.jknack>4.3.1</version.com.github.jknack>
   </properties>
diff --git a/client/deployment/src/main/java/io/quarkiverse/openapi/generator/deployment/wrapper/QuarkusJavaClientCodegen.java b/client/deployment/src/main/java/io/quarkiverse/openapi/generator/deployment/wrapper/QuarkusJavaClientCodegen.java
index 24808c32..e80f544e 100644
--- a/client/deployment/src/main/java/io/quarkiverse/openapi/generator/deployment/wrapper/QuarkusJavaClientCodegen.java
+++ b/client/deployment/src/main/java/io/quarkiverse/openapi/generator/deployment/wrapper/QuarkusJavaClientCodegen.java
@@ -57,6 +57,7 @@ public void processOpts() {
         this.sourceFolder = "";
         this.testFolder = "";
         this.embeddedTemplateDir = "templates";
+        this.supportsAdditionalPropertiesWithComposedSchema = false;
 
         Boolean beanValidation = (Boolean) this.additionalProperties.getOrDefault("use-bean-validation", false);