diff --git a/build.gradle b/build.gradle
index 4efc614..3cc4cd3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,7 +13,7 @@ plugins {
 	id 'eclipse'
 	id 'idea'
 	id 'jacoco'
-	id 'org.sonarqube' version '2.6.1'
+	id 'org.sonarqube' version '2.6.2'
 	id 'checkstyle'
 }
 description = 'Spring Integration AWS Support'
@@ -31,13 +31,13 @@ repositories {
 }
 
 ext {
-	assertjVersion = '3.9.1'
+	assertjVersion = '3.10.0'
 	dynamodbLockClientVersion = '1.0.0'
-	jacksonVersion = '2.9.5'
+	jacksonVersion = '2.9.6'
 	servletApiVersion = '3.1.0'
 	log4jVersion = '2.11.0'
 	springCloudAwsVersion = '2.0.0.RELEASE'
-	springIntegrationVersion = '5.0.6.RELEASE'
+	springIntegrationVersion = '5.0.7.RELEASE'
 
 	idPrefix = 'aws'
 
@@ -93,7 +93,7 @@ jacoco {
 
 checkstyle {
 	configFile = file("${rootDir}/src/checkstyle/checkstyle.xml")
-	toolVersion = "8.8"
+	toolVersion = "8.11"
 }
 
 dependencies {
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 91ca28c..0d4a951 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 16d2805..a95009c 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/src/main/java/org/springframework/integration/aws/inbound/S3StreamingMessageSource.java b/src/main/java/org/springframework/integration/aws/inbound/S3StreamingMessageSource.java
index d09e4f5..52d6908 100644
--- a/src/main/java/org/springframework/integration/aws/inbound/S3StreamingMessageSource.java
+++ b/src/main/java/org/springframework/integration/aws/inbound/S3StreamingMessageSource.java
@@ -75,4 +75,9 @@ public class S3StreamingMessageSource extends AbstractRemoteFileStreamingMessage
 		return file;
 	}
 
+	@Override
+	protected boolean isDirectory(S3ObjectSummary file) {
+		return false;
+	}
+
 }