diff --git a/놀이터(예제 코드 작성)/spring-multi-module/build.gradle.kts b/놀이터(예제 코드 작성)/spring-multi-module/build.gradle.kts
index ecad641..2525b65 100644
--- a/놀이터(예제 코드 작성)/spring-multi-module/build.gradle.kts	
+++ b/놀이터(예제 코드 작성)/spring-multi-module/build.gradle.kts	
@@ -1,41 +1,32 @@
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-
 plugins {
-	id("org.springframework.boot") version "2.6.7"
-	id("io.spring.dependency-management") version "1.0.11.RELEASE"
-	kotlin("jvm") version "1.6.21"
-	kotlin("plugin.spring") version "1.6.21"
-	kotlin("plugin.jpa") version "1.6.21"
+    id("org.springframework.boot") version "2.6.7" apply false
+    id("io.spring.dependency-management") version "1.0.11.RELEASE" apply false
+    kotlin("jvm") version "1.6.21" apply false
+    kotlin("plugin.spring") version "1.6.21" apply false
+    kotlin("plugin.jpa") version "1.6.21" apply false
 }
 
-group = "com.banjjoknim"
-version = "0.0.1-SNAPSHOT"
-java.sourceCompatibility = JavaVersion.VERSION_11
+allprojects {
+    group = "com.banjjoknim"
+    version = "0.0.1-SNAPSHOT"
 
-repositories {
-	mavenCentral()
+    tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
+        kotlinOptions {
+            freeCompilerArgs = listOf("-Xjsr305=strict")
+            jvmTarget = "11"
+        }
+    }
+
+    tasks.withType<Test> {
+        useJUnitPlatform()
+    }
+}
+
+subprojects {
+    repositories {
+        mavenCentral()
+    }
 }
 
 dependencies {
-	implementation("org.springframework.boot:spring-boot-starter-data-jpa")
-	implementation("org.springframework.boot:spring-boot-starter-validation")
-	implementation("org.springframework.boot:spring-boot-starter-web")
-	implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
-	implementation("org.jetbrains.kotlin:kotlin-reflect")
-	implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
-	runtimeOnly("com.h2database:h2")
-	runtimeOnly("mysql:mysql-connector-java")
-	runtimeOnly("org.mariadb.jdbc:mariadb-java-client")
-	testImplementation("org.springframework.boot:spring-boot-starter-test")
-}
-
-tasks.withType<KotlinCompile> {
-	kotlinOptions {
-		freeCompilerArgs = listOf("-Xjsr305=strict")
-		jvmTarget = "11"
-	}
-}
-
-tasks.withType<Test> {
-	useJUnitPlatform()
 }
diff --git a/놀이터(예제 코드 작성)/spring-multi-module/module-api/build.gradle.kts b/놀이터(예제 코드 작성)/spring-multi-module/module-api/build.gradle.kts
new file mode 100644
index 0000000..adc08e7
--- /dev/null
+++ b/놀이터(예제 코드 작성)/spring-multi-module/module-api/build.gradle.kts	
@@ -0,0 +1,25 @@
+plugins {
+    id("org.springframework.boot") version "2.6.7"
+    id("io.spring.dependency-management") version "1.0.11.RELEASE"
+    kotlin("jvm") version "1.6.21"
+    kotlin("plugin.spring") version "1.6.21"
+    kotlin("plugin.jpa") version "1.6.21"
+}
+
+group = "com.banjjoknim"
+version = "0.0.1-SNAPSHOT"
+
+java.sourceCompatibility = JavaVersion.VERSION_11
+
+dependencies {
+    implementation("org.springframework.boot:spring-boot-starter-data-jpa")
+    implementation("org.springframework.boot:spring-boot-starter-validation")
+    implementation("org.springframework.boot:spring-boot-starter-web")
+    implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
+    implementation("org.jetbrains.kotlin:kotlin-reflect")
+    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
+    runtimeOnly("com.h2database:h2")
+    runtimeOnly("mysql:mysql-connector-java")
+    runtimeOnly("org.mariadb.jdbc:mariadb-java-client")
+    testImplementation("org.springframework.boot:spring-boot-starter-test")
+}
diff --git a/놀이터(예제 코드 작성)/spring-multi-module/settings.gradle.kts b/놀이터(예제 코드 작성)/spring-multi-module/settings.gradle.kts
index 290f228..f2eb471 100644
--- a/놀이터(예제 코드 작성)/spring-multi-module/settings.gradle.kts	
+++ b/놀이터(예제 코드 작성)/spring-multi-module/settings.gradle.kts	
@@ -1 +1,2 @@
 rootProject.name = "springmultimodule"
+include("module-api")