diff --git a/websocket/jetty10/pom.xml b/websocket/jetty10/pom.xml
index 63cfb80dacd3..eb4a169a59d1 100644
--- a/websocket/jetty10/pom.xml
+++ b/websocket/jetty10/pom.xml
@@ -67,6 +67,7 @@ THE SOFTWARE.
     <dependency>
       <groupId>org.kohsuke.metainf-services</groupId>
       <artifactId>metainf-services</artifactId>
+      <optional>true</optional>
     </dependency>
   </dependencies>