diff --git a/pom.xml b/pom.xml
index 9359ab0..43c4b32 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>io.akka</groupId>
     <artifactId>akka-javasdk-parent</artifactId>
-    <version>3.5.13</version>
+    <version>3.5.14</version>
   </parent>
   
   <groupId>io.akka.ai</groupId>
diff --git a/src/main/resources/application.conf b/src/main/resources/application.conf
index 9dadbe0..3e57da4 100644
--- a/src/main/resources/application.conf
+++ b/src/main/resources/application.conf
@@ -18,7 +18,7 @@ akka.javasdk {
     }
 
     anthropic {
-      model-name = "claude-sonnet-4"
+      model-name = "claude-opus-4-6"
       api-key = ${?ANTHROPIC_API_KEY}
       max-tokens = 5000
     }
diff --git a/src/test/java/demo/multiagent/api/ActivityEndpointIntegrationTest.java b/src/test/java/demo/multiagent/api/ActivityEndpointIntegrationTest.java
index 7fa1e69..5036692 100644
--- a/src/test/java/demo/multiagent/api/ActivityEndpointIntegrationTest.java
+++ b/src/test/java/demo/multiagent/api/ActivityEndpointIntegrationTest.java
@@ -131,7 +131,7 @@ public void shouldHandleFullActivitySuggestionWorkflowWithPreferenceUpdate() {
           "planner-agent",
           "weather-agent",
           "activity-agent",
-          //"summarizer-agent", // FIXME not included because it's using tokenStream?
+          "summarizer-agent",
           "toxicity-evaluator",
           "summarization-evaluator"
         );
@@ -176,7 +176,7 @@ public void shouldHandleFullActivitySuggestionWorkflowWithPreferenceUpdate() {
           "planner-agent",
           "weather-agent",
           "activity-agent",
-          //"summarizer-agent", // FIXME not included because it's using tokenStream?
+          "summarizer-agent",
           "toxicity-evaluator",
           "summarization-evaluator"
         );