diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index 8ea2cbfcb..17df3eac7 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -15,7 +15,7 @@ dependencies {
     implementation("io.github.gradle-nexus:publish-plugin:2.0.0")
     implementation("org.openapitools:openapi-generator-gradle-plugin:7.17.0")
     implementation("com.github.spotbugs.snom:spotbugs-gradle-plugin:6.4.7")
-    implementation("org.springframework.boot:spring-boot-gradle-plugin:3.5.8")
+    implementation("org.springframework.boot:spring-boot-gradle-plugin:4.0.0")
 
     // workaround to use libs in a precompiled script plugin.
     // https://github.com/gradle/gradle/issues/15383
diff --git a/spring-boot/line-bot-spring-boot-client/build.gradle.kts b/spring-boot/line-bot-spring-boot-client/build.gradle.kts
index d7da3108a..8cee51416 100644
--- a/spring-boot/line-bot-spring-boot-client/build.gradle.kts
+++ b/spring-boot/line-bot-spring-boot-client/build.gradle.kts
@@ -32,6 +32,7 @@ dependencies {
     api(project(":clients:line-bot-shop-client"))
     api(project(":clients:line-channel-access-token-client"))
     api(project(":clients:line-liff-client"))
+    api(project(":line-bot-jackson"))
 
     implementation("org.springframework.boot:spring-boot-autoconfigure")
     implementation("org.springframework.boot:spring-boot-starter")
diff --git a/spring-boot/line-bot-spring-boot-client/src/main/java/com/linecorp/bot/spring/boot/core/configuration/LineBotAutoConfiguration.java b/spring-boot/line-bot-spring-boot-client/src/main/java/com/linecorp/bot/spring/boot/core/configuration/LineBotAutoConfiguration.java
index 37488bf35..36cd891f7 100644
--- a/spring-boot/line-bot-spring-boot-client/src/main/java/com/linecorp/bot/spring/boot/core/configuration/LineBotAutoConfiguration.java
+++ b/spring-boot/line-bot-spring-boot-client/src/main/java/com/linecorp/bot/spring/boot/core/configuration/LineBotAutoConfiguration.java
@@ -21,11 +21,14 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+
 import com.linecorp.bot.audience.client.ManageAudienceBlobClient;
 import com.linecorp.bot.audience.client.ManageAudienceClient;
 import com.linecorp.bot.client.base.channel.ChannelTokenSupplier;
 import com.linecorp.bot.client.base.channel.FixedChannelTokenSupplier;
 import com.linecorp.bot.insight.client.InsightClient;
+import com.linecorp.bot.jackson.ModelObjectMapper;
 import com.linecorp.bot.liff.client.LiffClient;
 import com.linecorp.bot.messaging.client.MessagingApiBlobClient;
 import com.linecorp.bot.messaging.client.MessagingApiClient;
@@ -47,6 +50,16 @@ public LineBotAutoConfiguration(LineBotProperties lineBotProperties) {
         this.lineBotProperties = lineBotProperties;
     }
 
+    /**
+     * Expose {@link ObjectMapper} as {@link Bean}
+     * in case of no other definition for {@link ObjectMapper} type.
+     */
+    @Bean
+    @ConditionalOnMissingBean(ObjectMapper.class)
+    public ObjectMapper objectMapper() {
+        return ModelObjectMapper.createNewObjectMapper();
+    }
+
     /**
      * Expose {@link FixedChannelTokenSupplier} as {@link Bean}
      * in case of no other definition for {@link ChannelTokenSupplier} type.