diff --git a/pom.xml b/pom.xml
index 02b518cc2..88598252d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,12 +6,12 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.3.6.RELEASE</version>
+        <version>2.4.2</version>
     </parent>
 
     <groupId>org.springframework.samples</groupId>
     <artifactId>spring-petclinic-microservices</artifactId>
-    <version>2.3.6</version>
+    <version>2.4.2</version>
     <name>${project.artifactId}</name>
     <packaging>pom</packaging>
 
@@ -29,8 +29,8 @@
         <java.version>1.8</java.version>
         <assertj.version>3.11.1</assertj.version>
 
-        <spring-boot.version>2.3.6.RELEASE</spring-boot.version>
-        <spring-cloud.version>Hoxton.SR9</spring-cloud.version>
+        <spring-boot.version>2.4.2</spring-boot.version>
+        <spring-cloud.version>2020.0.1</spring-cloud.version>
 
         <maven-surefire-plugin.version>2.22.0</maven-surefire-plugin.version>
 
diff --git a/spring-petclinic-admin-server/pom.xml b/spring-petclinic-admin-server/pom.xml
index 5094e7914..4ccdc17af 100644
--- a/spring-petclinic-admin-server/pom.xml
+++ b/spring-petclinic-admin-server/pom.xml
@@ -12,11 +12,11 @@
     <parent>
         <groupId>org.springframework.samples</groupId>
         <artifactId>spring-petclinic-microservices</artifactId>
-        <version>2.3.6</version>
+        <version>2.4.2</version>
     </parent>
 
     <properties>
-        <spring-boot-admin.version>2.2.2</spring-boot-admin.version>
+        <spring-boot-admin.version>2.3.1</spring-boot-admin.version>
         <docker.image.exposed.port>9090</docker.image.exposed.port>
         <docker.image.dockerfile.dir>${basedir}/../docker</docker.image.dockerfile.dir>
     </properties>
@@ -27,6 +27,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-bootstrap</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-config</artifactId>
diff --git a/spring-petclinic-admin-server/src/main/resources/bootstrap.yml b/spring-petclinic-admin-server/src/main/resources/bootstrap.yml
index acd744935..d1ec2a854 100644
--- a/spring-petclinic-admin-server/src/main/resources/bootstrap.yml
+++ b/spring-petclinic-admin-server/src/main/resources/bootstrap.yml
@@ -6,7 +6,9 @@ spring:
     name: admin-server
 ---
 spring:
-  profiles: docker
+  config:
+    activate:
+      on-profile: docker
   cloud:
     config:
       uri: http://config-server:8888
diff --git a/spring-petclinic-api-gateway/pom.xml b/spring-petclinic-api-gateway/pom.xml
index 41e67b212..0e9126ad2 100644
--- a/spring-petclinic-api-gateway/pom.xml
+++ b/spring-petclinic-api-gateway/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.samples</groupId>
         <artifactId>spring-petclinic-microservices</artifactId>
-        <version>2.3.6</version>
+        <version>2.4.2</version>
     </parent>
 
     <properties>
@@ -53,6 +53,10 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-sleuth-zipkin</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-bootstrap</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-circuitbreaker-reactor-resilience4j</artifactId>
diff --git a/spring-petclinic-api-gateway/src/main/resources/bootstrap.yml b/spring-petclinic-api-gateway/src/main/resources/bootstrap.yml
index f4cc782f9..9aef7487e 100644
--- a/spring-petclinic-api-gateway/src/main/resources/bootstrap.yml
+++ b/spring-petclinic-api-gateway/src/main/resources/bootstrap.yml
@@ -6,7 +6,9 @@ spring:
     name: api-gateway
 ---
 spring:
-  profiles: docker
+  config:
+    activate:
+      on-profile: docker
   cloud:
     config:
       uri: http://config-server:8888
diff --git a/spring-petclinic-config-server/pom.xml b/spring-petclinic-config-server/pom.xml
index 0c28aee55..737caf812 100644
--- a/spring-petclinic-config-server/pom.xml
+++ b/spring-petclinic-config-server/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.samples</groupId>
         <artifactId>spring-petclinic-microservices</artifactId>
-        <version>2.3.6</version>
+        <version>2.4.2</version>
     </parent>
 
     <properties>
@@ -32,6 +32,10 @@
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-config-server</artifactId>
 		</dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-bootstrap</artifactId>
+        </dependency>
 
         <!-- Third-party librairies -->
         <dependency>
diff --git a/spring-petclinic-config-server/src/test/resources/application.yml b/spring-petclinic-config-server/src/test/resources/application.yml
new file mode 100644
index 000000000..b4fb9c744
--- /dev/null
+++ b/spring-petclinic-config-server/src/test/resources/application.yml
@@ -0,0 +1,6 @@
+spring:
+  cloud:
+    config:
+      server:
+        git:
+          uri: https://github.com/spring-petclinic/spring-petclinic-microservices-config
diff --git a/spring-petclinic-customers-service/pom.xml b/spring-petclinic-customers-service/pom.xml
index ac198f123..de578ac6d 100644
--- a/spring-petclinic-customers-service/pom.xml
+++ b/spring-petclinic-customers-service/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.samples</groupId>
 		<artifactId>spring-petclinic-microservices</artifactId>
-		<version>2.3.6</version>
+		<version>2.4.2</version>
 	</parent>
 
     <properties>
@@ -41,6 +41,10 @@
         </dependency>
 
         <!-- Spring Cloud -->
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-bootstrap</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-config</artifactId>
diff --git a/spring-petclinic-customers-service/src/main/resources/bootstrap.yml b/spring-petclinic-customers-service/src/main/resources/bootstrap.yml
index c0f6dca61..58281a444 100644
--- a/spring-petclinic-customers-service/src/main/resources/bootstrap.yml
+++ b/spring-petclinic-customers-service/src/main/resources/bootstrap.yml
@@ -6,7 +6,9 @@ spring:
     name: customers-service
 ---
 spring:
-  profiles: docker
+  config:
+    activate:
+      on-profile: docker
   cloud:
     config:
       uri: http://config-server:8888
diff --git a/spring-petclinic-discovery-server/pom.xml b/spring-petclinic-discovery-server/pom.xml
index 2efabd77f..a6ca05cc1 100644
--- a/spring-petclinic-discovery-server/pom.xml
+++ b/spring-petclinic-discovery-server/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.samples</groupId>
         <artifactId>spring-petclinic-microservices</artifactId>
-        <version>2.3.6</version>
+        <version>2.4.2</version>
     </parent>
 
     <properties>
@@ -30,23 +30,15 @@
         <!-- Spring Cloud -->
         <dependency>
             <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-starter-config</artifactId>
+            <artifactId>spring-cloud-starter-bootstrap</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
-        </dependency>
-
-        <!-- Testing -->
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-api</artifactId>
-            <scope>test</scope>
+            <artifactId>spring-cloud-starter-config</artifactId>
         </dependency>
         <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <scope>test</scope>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
         </dependency>
 
         <!-- JAXB is required since Java 9 -->
diff --git a/spring-petclinic-discovery-server/src/main/java/org/springframework/samples/petclinic/discovery/DiscoveryServerApplication.java b/spring-petclinic-discovery-server/src/main/java/org/springframework/samples/petclinic/discovery/DiscoveryServerApplication.java
index 59e2c3396..6c2d281ec 100644
--- a/spring-petclinic-discovery-server/src/main/java/org/springframework/samples/petclinic/discovery/DiscoveryServerApplication.java
+++ b/spring-petclinic-discovery-server/src/main/java/org/springframework/samples/petclinic/discovery/DiscoveryServerApplication.java
@@ -22,8 +22,8 @@
 /**
  * @author Maciej Szarlinski
  */
-@EnableEurekaServer
 @SpringBootApplication
+@EnableEurekaServer
 public class DiscoveryServerApplication {
 
 	public static void main(String[] args) {
diff --git a/spring-petclinic-discovery-server/src/main/resources/bootstrap.yml b/spring-petclinic-discovery-server/src/main/resources/bootstrap.yml
index 9c07ca22b..eba87c89e 100644
--- a/spring-petclinic-discovery-server/src/main/resources/bootstrap.yml
+++ b/spring-petclinic-discovery-server/src/main/resources/bootstrap.yml
@@ -6,7 +6,9 @@ spring:
     name: discovery-server
 ---
 spring:
-  profiles: docker
+  config:
+    activate:
+      on-profile: docker
   cloud:
     config:
       uri: http://config-server:8888
diff --git a/spring-petclinic-vets-service/pom.xml b/spring-petclinic-vets-service/pom.xml
index 7b14f16f5..570452cb3 100644
--- a/spring-petclinic-vets-service/pom.xml
+++ b/spring-petclinic-vets-service/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.samples</groupId>
 		<artifactId>spring-petclinic-microservices</artifactId>
-		<version>2.3.6</version>
+		<version>2.4.2</version>
 	</parent>
 
     <properties>
@@ -53,6 +53,10 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-sleuth-zipkin</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-bootstrap</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-config</artifactId>
diff --git a/spring-petclinic-vets-service/src/main/resources/bootstrap.yml b/spring-petclinic-vets-service/src/main/resources/bootstrap.yml
index 59c6dd258..bc2f683e5 100644
--- a/spring-petclinic-vets-service/src/main/resources/bootstrap.yml
+++ b/spring-petclinic-vets-service/src/main/resources/bootstrap.yml
@@ -6,7 +6,9 @@ spring:
     name: vets-service
 ---
 spring:
-  profiles: docker
+  config:
+    activate:
+      on-profile: docker
   cloud:
     config:
       uri: http://config-server:8888
diff --git a/spring-petclinic-visits-service/pom.xml b/spring-petclinic-visits-service/pom.xml
index e7c495858..670acbe68 100644
--- a/spring-petclinic-visits-service/pom.xml
+++ b/spring-petclinic-visits-service/pom.xml
@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.samples</groupId>
         <artifactId>spring-petclinic-microservices</artifactId>
-        <version>2.3.6</version>
+        <version>2.4.2</version>
     </parent>
 
     <properties>
@@ -40,6 +40,10 @@
         </dependency>
 
         <!-- Spring Cloud -->
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-bootstrap</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-config</artifactId>
diff --git a/spring-petclinic-visits-service/src/main/resources/bootstrap.yml b/spring-petclinic-visits-service/src/main/resources/bootstrap.yml
index 1ddd133b1..92f4fcae3 100644
--- a/spring-petclinic-visits-service/src/main/resources/bootstrap.yml
+++ b/spring-petclinic-visits-service/src/main/resources/bootstrap.yml
@@ -6,7 +6,9 @@ spring:
     name: visits-service
 ---
 spring:
-  profiles: docker
+  config:
+    activate:
+      on-profile: docker
   cloud:
     config:
       uri: http://config-server:8888