diff --git a/spring-ai-model/src/main/java/org/springframework/ai/model/tool/DefaultToolCallingManager.java b/spring-ai-model/src/main/java/org/springframework/ai/model/tool/DefaultToolCallingManager.java
index e96b59528..e80db2974 100644
--- a/spring-ai-model/src/main/java/org/springframework/ai/model/tool/DefaultToolCallingManager.java
+++ b/spring-ai-model/src/main/java/org/springframework/ai/model/tool/DefaultToolCallingManager.java
@@ -49,7 +49,7 @@ import org.springframework.util.CollectionUtils;
  * @author Thomas Vitale
  * @since 1.0.0
  */
-public class DefaultToolCallingManager implements ToolCallingManager {
+public final class DefaultToolCallingManager implements ToolCallingManager {
 
 	private static final Logger logger = LoggerFactory.getLogger(DefaultToolCallingManager.class);