Index: src/main/java/org/jboss/weld/integration/deployer/metadata/PostWebMetadataDeployer.java
===================================================================
--- src/main/java/org/jboss/weld/integration/deployer/metadata/PostWebMetadataDeployer.java	(revision 110167)
+++ src/main/java/org/jboss/weld/integration/deployer/metadata/PostWebMetadataDeployer.java	(working copy)
@@ -67,6 +67,7 @@
       CPF = new FilterMetaData();
       CPF.setFilterName("Weld Conversation Propagation Filter");
       CPF.setFilterClass("org.jboss.weld.servlet.ConversationPropagationFilter");
+      CPF.setAsyncSupported(true);
       CPFM = new FilterMappingMetaData();
       CPFM.setFilterName("Weld Conversation Propagation Filter");
       CPFM.setUrlPatterns(Arrays.asList("/*"));