diff --git a/spring-cloud-vault-config/src/main/java/org/springframework/cloud/vault/config/VaultBootstrapper.java b/spring-cloud-vault-config/src/main/java/org/springframework/cloud/vault/config/VaultBootstrapper.java
index 1be7b0d7..18d75598 100644
--- a/spring-cloud-vault-config/src/main/java/org/springframework/cloud/vault/config/VaultBootstrapper.java
+++ b/spring-cloud-vault-config/src/main/java/org/springframework/cloud/vault/config/VaultBootstrapper.java
@@ -16,7 +16,7 @@
 
 package org.springframework.cloud.vault.config;
 
-import org.springframework.boot.Bootstrapper;
+import org.springframework.boot.BootstrapRegistryInitializer;
 import org.springframework.util.Assert;
 
 /**
@@ -32,11 +32,12 @@ public abstract class VaultBootstrapper {
 	}
 
 	/**
-	 * Create a {@link Bootstrapper} that configures a {@link VaultConfigurer}.
+	 * Create a {@link BootstrapRegistryInitializer} that configures a
+	 * {@link VaultConfigurer}.
 	 * @param configurer the configurer to apply.
 	 * @return the bootstrapper object.
 	 */
-	public static Bootstrapper fromConfigurer(VaultConfigurer configurer) {
+	public static BootstrapRegistryInitializer fromConfigurer(VaultConfigurer configurer) {
 
 		Assert.notNull(configurer, "VaultConfigurer must not be null");
 
diff --git a/spring-cloud-vault-config/src/main/java/org/springframework/cloud/vault/config/VaultConfigDataLoader.java b/spring-cloud-vault-config/src/main/java/org/springframework/cloud/vault/config/VaultConfigDataLoader.java
index b9ce2cdd..4369d4d3 100644
--- a/spring-cloud-vault-config/src/main/java/org/springframework/cloud/vault/config/VaultConfigDataLoader.java
+++ b/spring-cloud-vault-config/src/main/java/org/springframework/cloud/vault/config/VaultConfigDataLoader.java
@@ -31,7 +31,7 @@ import org.apache.commons.logging.Log;
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.boot.BootstrapContext;
 import org.springframework.boot.BootstrapRegistry;
-import org.springframework.boot.Bootstrapper;
+import org.springframework.boot.BootstrapRegistryInitializer;
 import org.springframework.boot.ConfigurableBootstrapContext;
 import org.springframework.boot.context.config.ConfigData;
 import org.springframework.boot.context.config.ConfigDataLoader;
@@ -82,7 +82,7 @@ import static org.springframework.vault.config.AbstractVaultConfiguration.Client
  * {@link VaultReactiveAutoConfiguration}.
  * <p>
  * Infrastructure beans can be customized by registering instances through
- * {@link Bootstrapper}.
+ * {@link BootstrapRegistryInitializer}.
  *
  * @author Mark Paluch
  * @since 3.0
diff --git a/spring-cloud-vault-config/src/test/java/org/springframework/cloud/vault/config/VaultBootstrapperIntegrationTests.java b/spring-cloud-vault-config/src/test/java/org/springframework/cloud/vault/config/VaultBootstrapperIntegrationTests.java
index 1fa22dbe..da7d9a4c 100644
--- a/spring-cloud-vault-config/src/test/java/org/springframework/cloud/vault/config/VaultBootstrapperIntegrationTests.java
+++ b/spring-cloud-vault-config/src/test/java/org/springframework/cloud/vault/config/VaultBootstrapperIntegrationTests.java
@@ -52,8 +52,8 @@ public class VaultBootstrapperIntegrationTests extends IntegrationTestSupport {
 
 		SpringApplication application = new SpringApplication(Config.class);
 		application.setWebApplicationType(WebApplicationType.NONE);
-		application
-				.addBootstrapper(VaultBootstrapper.fromConfigurer(configurer -> configurer.add("secret/customized")));
+		application.addBootstrapRegistryInitializer(
+				VaultBootstrapper.fromConfigurer(configurer -> configurer.add("secret/customized")));
 
 		this.context = application.run("--spring.application.name=VaultBootstrapPropertySourceConfigurationTests",
 				"--spring.config.import=vault:", "--spring.cloud.vault.token=" + Settings.token().getToken());