diff --git a/common/aws-s3-common/pom.xml b/common/aws-s3-common/pom.xml
index 172c0ee4..1b2f1d4a 100644
--- a/common/aws-s3-common/pom.xml
+++ b/common/aws-s3-common/pom.xml
@@ -25,8 +25,8 @@
         </dependency>
 
         <dependency>
-            <groupId>software.amazon.awssdk.crt</groupId>
-            <artifactId>aws-crt</artifactId>
+            <groupId>software.amazon.awssdk</groupId>
+            <artifactId>aws-crt-client</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework.integration</groupId>
diff --git a/supplier/s3-supplier/src/main/java/org/springframework/cloud/fn/supplier/s3/AwsS3SupplierConfiguration.java b/supplier/s3-supplier/src/main/java/org/springframework/cloud/fn/supplier/s3/AwsS3SupplierConfiguration.java
index cd670d9e..5ad44a6b 100644
--- a/supplier/s3-supplier/src/main/java/org/springframework/cloud/fn/supplier/s3/AwsS3SupplierConfiguration.java
+++ b/supplier/s3-supplier/src/main/java/org/springframework/cloud/fn/supplier/s3/AwsS3SupplierConfiguration.java
@@ -22,6 +22,8 @@ import java.util.function.Supplier;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import org.reactivestreams.Publisher;
 import reactor.core.publisher.Flux;
 import software.amazon.awssdk.services.s3.S3Client;
@@ -206,18 +208,27 @@ public class AwsS3SupplierConfiguration {
 		}
 
 		@Bean
-		ReactiveMessageSourceProducer s3ListingMessageProducer(S3Client amazonS3,
+		ReactiveMessageSourceProducer s3ListingMessageProducer(S3Client amazonS3, ObjectMapper objectMapper,
 				AwsS3SupplierProperties awsS3SupplierProperties, Predicate<S3Object> filter) {
 
 			return new ReactiveMessageSourceProducer(
-					(MessageSource<List<S3Object>>) () -> {
-						List<S3Object> summaryList =
+					(MessageSource<List<String>>) () -> {
+						List<String> summaryList =
 								amazonS3.listObjects(ListObjectsRequest.builder()
 												.bucket(awsS3SupplierProperties.getRemoteDir())
 												.build())
 										.contents()
 										.stream()
-										.filter(filter).collect(Collectors.toList());
+										.filter(filter)
+										.map(s3Object -> {
+											try {
+												return objectMapper.writeValueAsString(s3Object.toBuilder());
+											}
+											catch (JsonProcessingException ex) {
+												throw new RuntimeException(ex);
+											}
+										})
+										.collect(Collectors.toList());
 						return summaryList.isEmpty() ? null : new GenericMessage<>(summaryList);
 					});
 		}
diff --git a/supplier/s3-supplier/src/test/java/org/springframework/cloud/fn/supplier/s3/AmazonS3ListOnlyTests.java b/supplier/s3-supplier/src/test/java/org/springframework/cloud/fn/supplier/s3/AmazonS3ListOnlyTests.java
index 855bd6f6..bb8d324c 100644
--- a/supplier/s3-supplier/src/test/java/org/springframework/cloud/fn/supplier/s3/AmazonS3ListOnlyTests.java
+++ b/supplier/s3-supplier/src/test/java/org/springframework/cloud/fn/supplier/s3/AmazonS3ListOnlyTests.java
@@ -16,14 +16,16 @@
 
 package org.springframework.cloud.fn.supplier.s3;
 
+import java.io.IOException;
+import java.io.UncheckedIOException;
 import java.time.Duration;
 import java.util.HashSet;
 
 import org.junit.jupiter.api.Test;
 import reactor.core.publisher.Flux;
 import reactor.test.StepVerifier;
-import software.amazon.awssdk.services.s3.model.S3Object;
 
+import org.springframework.integration.json.JsonPathUtils;
 import org.springframework.messaging.Message;
 import org.springframework.test.context.TestPropertySource;
 
@@ -43,19 +45,22 @@ public class AmazonS3ListOnlyTests extends AbstractAwsS3SupplierMockTests {
 		keys.add("subdir/otherFile");
 		StepVerifier stepVerifier = StepVerifier.create(messageFlux)
 				.assertNext(message -> {
-					S3Object s3Object = (S3Object) message.getPayload();
-					assertThat(keys).contains(s3Object.key());
-					keys.remove(s3Object.key());
+					String s3Object = (String) message.getPayload();
+					String key = jsonPathKey(s3Object);
+					assertThat(keys).contains(key);
+					keys.remove(key);
 				})
 				.assertNext(message -> {
-					S3Object s3Object = (S3Object) message.getPayload();
-					assertThat(keys).contains(s3Object.key());
-					keys.remove(s3Object.key());
+					String s3Object = (String) message.getPayload();
+					String key = jsonPathKey(s3Object);
+					assertThat(keys).contains(key);
+					keys.remove(key);
 				})
 				.assertNext(message -> {
-					S3Object s3Object = (S3Object) message.getPayload();
-					assertThat(keys).contains(s3Object.key());
-					keys.remove(s3Object.key());
+					String s3Object = (String) message.getPayload();
+					String key = jsonPathKey(s3Object);
+					assertThat(keys).contains(key);
+					keys.remove(key);
 				})
 				.thenCancel()
 				.verifyLater();
@@ -63,4 +68,13 @@ public class AmazonS3ListOnlyTests extends AbstractAwsS3SupplierMockTests {
 		stepVerifier.verify(Duration.ofSeconds(10));
 	}
 
+	private static String jsonPathKey(String s3Object) {
+		try {
+			return JsonPathUtils.evaluate(s3Object, "$.key");
+		}
+		catch (IOException ex) {
+			throw new UncheckedIOException(ex);
+		}
+	}
+
 }