diff --git a/core/pom.xml b/core/pom.xml
index 83e226bd..d297ea2e 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -125,6 +125,7 @@
         <dependency>
             <groupId>wsdl4j</groupId>
             <artifactId>wsdl4j</artifactId>
+            <optional>true</optional>
         </dependency>
         <!-- Java EE dependencies -->
         <dependency>
diff --git a/support/pom.xml b/support/pom.xml
index 46c081e7..2137d712 100644
--- a/support/pom.xml
+++ b/support/pom.xml
@@ -92,6 +92,7 @@
         <dependency>
             <groupId>jivesoftware</groupId>
             <artifactId>smack</artifactId>
+            <optional>true</optional>
         </dependency>
         <!-- Other dependencies -->
         <dependency>