diff --git a/extensions/slack/deployment/pom.xml b/extensions/slack/deployment/pom.xml
index b91e6a24714a..72b26e96256c 100644
--- a/extensions/slack/deployment/pom.xml
+++ b/extensions/slack/deployment/pom.xml
@@ -38,6 +38,11 @@
             <groupId>org.apache.camel.quarkus</groupId>
             <artifactId>camel-quarkus-slack</artifactId>
         </dependency>
+        <!-- Optional dependency, if not present Quarkus complains about missing class -->
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-cloudevents-deployment</artifactId>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/extensions/slack/runtime/pom.xml b/extensions/slack/runtime/pom.xml
index 1593934a0fba..8c6cab07aa70 100644
--- a/extensions/slack/runtime/pom.xml
+++ b/extensions/slack/runtime/pom.xml
@@ -43,6 +43,11 @@
             <groupId>org.apache.camel</groupId>
             <artifactId>camel-slack</artifactId>
         </dependency>
+        <!-- Optional dependency, if not present Quarkus complains about missing class -->
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-cloudevents</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.graalvm.sdk</groupId>
             <artifactId>graal-sdk</artifactId>