diff --git a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/observability/ZipkinIntegrationTests.java b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/observability/ZipkinIntegrationTests.java
index 41b9174ec..b88049ccb 100644
--- a/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/observability/ZipkinIntegrationTests.java
+++ b/spring-data-mongodb/src/test/java/org/springframework/data/mongodb/observability/ZipkinIntegrationTests.java
@@ -90,11 +90,10 @@ public class ZipkinIntegrationTests extends SampleTestRunner {
 	}
 
 	@Override
-	public BiConsumer<BuildingBlocks, Deque<ObservationHandler>> customizeObservationHandlers() {
+	public BiConsumer<BuildingBlocks, Deque<ObservationHandler<? extends Observation.Context>>> customizeObservationHandlers() {
 
-		return (buildingBlocks, observationHandlers) -> {
-			observationHandlers.addLast(new MongoTracingObservationHandler(buildingBlocks.getTracer()));
-		};
+		return (buildingBlocks, observationHandlers) -> observationHandlers
+				.addLast(new MongoTracingObservationHandler(buildingBlocks.getTracer()));
 	}
 
 	@Override