diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/build.gradle b/spring-boot-project/spring-boot-actuator-autoconfigure/build.gradle
index 38cfeca4648..14d6c88a0b8 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/build.gradle
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/build.gradle
@@ -37,7 +37,7 @@ dependencies {
 	optional("io.dropwizard.metrics:metrics-jmx")
 	optional("io.lettuce:lettuce-core")
 	optional("io.micrometer:micrometer-observation")
-	optional("io.micrometer:micrometer-core")
+	optional("io.micrometer:micrometer-jakarta9")
 	optional("io.micrometer:micrometer-tracing")
 	optional("io.micrometer:micrometer-tracing-bridge-brave")
 	optional("io.micrometer:micrometer-tracing-bridge-otel")
diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/observation/jms/JmsTemplateObservationAutoConfiguration.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/observation/jms/JmsTemplateObservationAutoConfiguration.java
index faa7db23e62..9629468e605 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/observation/jms/JmsTemplateObservationAutoConfiguration.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/observation/jms/JmsTemplateObservationAutoConfiguration.java
@@ -16,7 +16,7 @@
 
 package org.springframework.boot.actuate.autoconfigure.observation.jms;
 
-import io.micrometer.core.instrument.binder.jms.JmsPublishObservationContext;
+import io.micrometer.jakarta9.instrument.jms.JmsPublishObservationContext;
 import io.micrometer.observation.Observation;
 import io.micrometer.observation.ObservationRegistry;
 import jakarta.jms.Message;
diff --git a/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/observation/jms/JmsTemplateObservationAutoConfigurationTests.java b/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/observation/jms/JmsTemplateObservationAutoConfigurationTests.java
index 3abd6c1d64d..dd097676b2d 100644
--- a/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/observation/jms/JmsTemplateObservationAutoConfigurationTests.java
+++ b/spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/observation/jms/JmsTemplateObservationAutoConfigurationTests.java
@@ -51,8 +51,8 @@ class JmsTemplateObservationAutoConfigurationTests {
 	}
 
 	@Test
-	void shouldBackOffWhenMircrometerCoreIsNotPresent() {
-		this.contextRunner.withClassLoader(new FilteredClassLoader("io.micrometer.core")).run((context) -> {
+	void shouldBackOffWhenMicrometerJakartaIsNotPresent() {
+		this.contextRunner.withClassLoader(new FilteredClassLoader("io.micrometer.jakarta")).run((context) -> {
 			JmsTemplate jmsTemplate = context.getBean(JmsTemplate.class);
 			assertThat(jmsTemplate).extracting("observationRegistry").isNull();
 		});
diff --git a/spring-boot-project/spring-boot-actuator/build.gradle b/spring-boot-project/spring-boot-actuator/build.gradle
index 3f7999ca49d..e9a027a00e3 100644
--- a/spring-boot-project/spring-boot-actuator/build.gradle
+++ b/spring-boot-project/spring-boot-actuator/build.gradle
@@ -22,7 +22,7 @@ dependencies {
 	optional("com.zaxxer:HikariCP")
 	optional("io.lettuce:lettuce-core")
 	optional("io.micrometer:micrometer-observation")
-	optional("io.micrometer:micrometer-core")
+	optional("io.micrometer:micrometer-jakarta9")
 	optional("io.micrometer:micrometer-tracing")
 	optional("io.micrometer:micrometer-registry-prometheus")
 	optional("io.prometheus:simpleclient_pushgateway") {
diff --git a/spring-boot-project/spring-boot-docs/build.gradle b/spring-boot-project/spring-boot-docs/build.gradle
index fed9578b549..f2eac01891d 100644
--- a/spring-boot-project/spring-boot-docs/build.gradle
+++ b/spring-boot-project/spring-boot-docs/build.gradle
@@ -89,7 +89,7 @@ dependencies {
 	implementation(project(path: ":spring-boot-project:spring-boot-devtools"))
 	implementation("ch.qos.logback:logback-classic")
 	implementation("com.zaxxer:HikariCP")
-	implementation("io.micrometer:micrometer-core")
+	implementation("io.micrometer:micrometer-jakarta9")
 	implementation("io.micrometer:micrometer-tracing")
 	implementation("io.micrometer:micrometer-registry-graphite")
 	implementation("io.micrometer:micrometer-registry-jmx")
diff --git a/spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/howto/httpclients/webclientreactornettycustomization/MyReactorNettyClientConfiguration.kt b/spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/howto/httpclients/webclientreactornettycustomization/MyReactorNettyClientConfiguration.kt
index 85c140e3f07..1dac3ab5de0 100644
--- a/spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/howto/httpclients/webclientreactornettycustomization/MyReactorNettyClientConfiguration.kt
+++ b/spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/howto/httpclients/webclientreactornettycustomization/MyReactorNettyClientConfiguration.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,7 +22,7 @@ import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
 import org.springframework.http.client.reactive.ClientHttpConnector
 import org.springframework.http.client.reactive.ReactorClientHttpConnector
-import org.springframework.http.client.reactive.ReactorResourceFactory
+import org.springframework.http.client.ReactorResourceFactory
 import reactor.netty.http.client.HttpClient
 
 @Configuration(proxyBeanMethods = false)
diff --git a/spring-boot-project/spring-boot-starters/spring-boot-starter-actuator/build.gradle b/spring-boot-project/spring-boot-starters/spring-boot-starter-actuator/build.gradle
index 3e2a471593a..0ff356b4e0d 100644
--- a/spring-boot-project/spring-boot-starters/spring-boot-starter-actuator/build.gradle
+++ b/spring-boot-project/spring-boot-starters/spring-boot-starter-actuator/build.gradle
@@ -8,5 +8,5 @@ dependencies {
 	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
 	api(project(":spring-boot-project:spring-boot-actuator-autoconfigure"))
 	api("io.micrometer:micrometer-observation")
-	api("io.micrometer:micrometer-core")
+	api("io.micrometer:micrometer-jakarta9")
 }