diff --git a/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/ConfigurationUpdateStrategy.java b/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/ConfigurationUpdateStrategy.java
index b394a15d..1b6b7506 100644
--- a/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/ConfigurationUpdateStrategy.java
+++ b/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/ConfigurationUpdateStrategy.java
@@ -26,15 +26,13 @@ import java.util.Objects;
  */
 public class ConfigurationUpdateStrategy {
 
-	private String name;
+	private final String name;
 
-	private Runnable reloadProcedure;
+	private final Runnable reloadProcedure;
 
 	public ConfigurationUpdateStrategy(String name, Runnable reloadProcedure) {
-		Objects.requireNonNull(name, "name cannot be null");
-		Objects.requireNonNull(reloadProcedure, "reloadProcedure cannot be null");
-		this.name = name;
-		this.reloadProcedure = reloadProcedure;
+		this.name = Objects.requireNonNull(name, "name cannot be null");
+		this.reloadProcedure = Objects.requireNonNull(reloadProcedure, "reloadProcedure cannot be null");
 	}
 
 	public String getName() {
@@ -47,10 +45,7 @@ public class ConfigurationUpdateStrategy {
 
 	@Override
 	public String toString() {
-		final StringBuilder sb = new StringBuilder("ConfigurationUpdateStrategy{");
-		sb.append("name='").append(this.name).append('\'');
-		sb.append('}');
-		return sb.toString();
+		return "ConfigurationUpdateStrategy{name='" + this.name + "'}";
 	}
 
 }
diff --git a/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/EventBasedConfigurationChangeDetector.java b/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/EventBasedConfigurationChangeDetector.java
index 47c18166..af712dbb 100644
--- a/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/EventBasedConfigurationChangeDetector.java
+++ b/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/EventBasedConfigurationChangeDetector.java
@@ -44,11 +44,11 @@ import org.springframework.core.env.AbstractEnvironment;
  */
 public class EventBasedConfigurationChangeDetector extends ConfigurationChangeDetector {
 
-	private ConfigMapPropertySourceLocator configMapPropertySourceLocator;
+	private final ConfigMapPropertySourceLocator configMapPropertySourceLocator;
 
-	private SecretsPropertySourceLocator secretsPropertySourceLocator;
+	private final SecretsPropertySourceLocator secretsPropertySourceLocator;
 
-	private Map<String, Watch> watches;
+	private final Map<String, Watch> watches;
 
 	public EventBasedConfigurationChangeDetector(AbstractEnvironment environment, ConfigReloadProperties properties,
 			KubernetesClient kubernetesClient, ConfigurationUpdateStrategy strategy,
diff --git a/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/PollingConfigurationChangeDetector.java b/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/PollingConfigurationChangeDetector.java
index 843325d2..941ad47e 100644
--- a/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/PollingConfigurationChangeDetector.java
+++ b/spring-cloud-kubernetes-config/src/main/java/org/springframework/cloud/kubernetes/config/reload/PollingConfigurationChangeDetector.java
@@ -43,9 +43,9 @@ public class PollingConfigurationChangeDetector extends ConfigurationChangeDetec
 
 	protected Log log = LogFactory.getLog(getClass());
 
-	private ConfigMapPropertySourceLocator configMapPropertySourceLocator;
+	private final ConfigMapPropertySourceLocator configMapPropertySourceLocator;
 
-	private SecretsPropertySourceLocator secretsPropertySourceLocator;
+	private final SecretsPropertySourceLocator secretsPropertySourceLocator;
 
 	public PollingConfigurationChangeDetector(AbstractEnvironment environment, ConfigReloadProperties properties,
 			KubernetesClient kubernetesClient, ConfigurationUpdateStrategy strategy,