diff --git a/helloworld/pom.xml b/helloworld/pom.xml
index fe60668..b7e413c 100644
--- a/helloworld/pom.xml
+++ b/helloworld/pom.xml
@@ -5,7 +5,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.springframework.samples.spring</groupId>
 	<artifactId>spring-rabbit-helloworld</artifactId>
-	<version>2.2.20.RELEASE</version>
+	<version>2.2.21.RELEASE</version>
 	<packaging>jar</packaging>
 	<name>Spring AMQP Hello World</name>
 	<url>https://www.spring.io</url>
@@ -16,7 +16,7 @@
 	</description>
 	<properties>
 		<maven.test.failure.ignore>true</maven.test.failure.ignore>
-		<spring.amqp.version>2.2.20.RELEASE</spring.amqp.version>
+		<spring.amqp.version>2.2.21.RELEASE</spring.amqp.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<java.version>1.8</java.version>
 		<maven.test.failure.ignore>false</maven.test.failure.ignore>
diff --git a/log4j2/pom.xml b/log4j2/pom.xml
index d593178..c23e970 100644
--- a/log4j2/pom.xml
+++ b/log4j2/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>org.springframework.amqp.samples</groupId>
 	<artifactId>log4j2</artifactId>
-	<version>2.2.20.RELEASE</version>
+	<version>2.2.21.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>log4j2</name>
@@ -22,7 +22,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<java.version>1.8</java.version>
 		<spring.framework.version>5.2.15.RELEASE</spring.framework.version>
-		<spring.amqp.version>2.2.20.RELEASE</spring.amqp.version>
+		<spring.amqp.version>2.2.21.RELEASE</spring.amqp.version>
 	</properties>
 
 	<dependencies>
diff --git a/spring-rabbit-confirms-returns/pom.xml b/spring-rabbit-confirms-returns/pom.xml
index 0ec22be..c0afc55 100644
--- a/spring-rabbit-confirms-returns/pom.xml
+++ b/spring-rabbit-confirms-returns/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>org.springframework.amqp.samples</groupId>
 	<artifactId>spring-rabbit-confirms-returns</artifactId>
-	<version>2.2.20.RELEASE</version>
+	<version>2.2.21.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>spring-rabbit-confirms-returns</name>
@@ -22,7 +22,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
-		<spring.amqp.version>2.2.20.RELEASE</spring.amqp.version>
+		<spring.amqp.version>2.2.21.RELEASE</spring.amqp.version>
 	</properties>
 
 	<dependencies>
diff --git a/spring-rabbit-global-errorhandler/pom.xml b/spring-rabbit-global-errorhandler/pom.xml
index e050494..7d0e628 100644
--- a/spring-rabbit-global-errorhandler/pom.xml
+++ b/spring-rabbit-global-errorhandler/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>com.example</groupId>
 	<artifactId>spring-rabbit-global-errorhandler</artifactId>
-	<version>2.2.20.RELEASE</version>
+	<version>2.2.21.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>spring-rabbit-global-errorhandler</name>
@@ -22,7 +22,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
-		<spring.amqp.version>2.2.20.RELEASE</spring.amqp.version>
+		<spring.amqp.version>2.2.21.RELEASE</spring.amqp.version>
 	</properties>
 
 	<dependencies>
diff --git a/spring-rabbit-json/pom.xml b/spring-rabbit-json/pom.xml
index e98d356..2133c27 100644
--- a/spring-rabbit-json/pom.xml
+++ b/spring-rabbit-json/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>com.example</groupId>
 	<artifactId>spring-rabbit-json</artifactId>
-	<version>2.2.20.RELEASE</version>
+	<version>2.2.21.RELEASE</version>
 	<packaging>jar</packaging>
 
 	<name>spring-rabbit-json</name>
@@ -22,7 +22,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
-		<spring.amqp.version>2.2.20.RELEASE</spring.amqp.version>
+		<spring.amqp.version>2.2.21.RELEASE</spring.amqp.version>
 	</properties>
 
 	<dependencies>
diff --git a/stocks/pom.xml b/stocks/pom.xml
index 1cd8f21..da84900 100644
--- a/stocks/pom.xml
+++ b/stocks/pom.xml
@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.springframework.samples.spring</groupId>
 	<artifactId>spring-rabbit-stocks</artifactId>
-	<version>2.2.20.RELEASE</version>
+	<version>2.2.21.RELEASE</version>
 	<packaging>war</packaging>
 	<name>Spring Rabbit Stocks</name>
 	<url>https://www.spring.io</url>
@@ -16,7 +16,7 @@
 	<properties>
 		<maven.test.failure.ignore>true</maven.test.failure.ignore>
 		<spring.framework.version>5.2.15.RELEASE</spring.framework.version>
-		<spring.amqp.version>2.2.20.RELEASE</spring.amqp.version>
+		<spring.amqp.version>2.2.21.RELEASE</spring.amqp.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<java.version>1.8</java.version>
 		<maven.test.failure.ignore>false</maven.test.failure.ignore>
@@ -114,19 +114,19 @@
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
 			<artifactId>log4j-core</artifactId>
-			<version>2.12.1</version>
+			<version>2.17.0</version>
 		</dependency>
 
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
 			<artifactId>log4j-jcl</artifactId>
-			<version>2.12.1</version>
+			<version>2.17.0</version>
 			<scope>runtime</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
 			<artifactId>log4j-slf4j-impl</artifactId>
-			<version>2.12.1</version>
+			<version>2.17.0</version>
 		</dependency>
 		<dependency>
 			<groupId>com.jgoodies</groupId>