diff --git a/build.gradle.kts b/build.gradle.kts
index fab3dad..6289800 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -6,7 +6,6 @@ plugins {
     kotlin("jvm") version "1.5.20"
     kotlin("plugin.spring") version "1.5.20"
 }
-
 group = "email.timemail"
 version = "0.0.1-SNAPSHOT"
 java.sourceCompatibility = JavaVersion.VERSION_1_8
@@ -15,6 +14,14 @@ repositories {
     mavenCentral()
 }
 
+buildscript {
+    ext {
+        val kotlinVersion = "1.2.20"
+        val springBootVersion = "2.0.0.RELEASE"
+    }
+
+}
+
 dependencies {
     implementation("org.springframework.boot:spring-boot-starter")
     implementation("org.springframework.boot:spring-boot-starter-web")
@@ -23,7 +30,7 @@ dependencies {
     implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
     testImplementation("org.springframework.boot:spring-boot-starter-test")
     implementation("com.github.xiaoymin:knife4j-spring-boot-starter:3.0.2")
-    implementation("com.baomidou:mybatis-plus-boot-starter:3.4.2")
+    implementation("com.baomidou:mybatis-plus-boot-starter:${ext}")
     implementation("com.alibaba:druid-spring-boot-starter:1.2.5")
     implementation("org.postgresql:postgresql:42.2.18")
     implementation("org.projectlombok:lombok:1.18.12")
diff --git a/src/main/kotlin/email/timemail/mail/controller/IndexController.kt b/src/main/kotlin/email/timemail/mail/controller/HomeController.kt
similarity index 92%
rename from src/main/kotlin/email/timemail/mail/controller/IndexController.kt
rename to src/main/kotlin/email/timemail/mail/controller/HomeController.kt
index 8fb1a41..8d2177a 100644
--- a/src/main/kotlin/email/timemail/mail/controller/IndexController.kt
+++ b/src/main/kotlin/email/timemail/mail/controller/HomeController.kt
@@ -6,7 +6,7 @@ import springfox.documentation.annotations.ApiIgnore
 
 @Controller
 @ApiIgnore
-open class IndexController {
+open class HomeController {
     @RequestMapping(value = ["/", "/swagger"])
     open fun index(): String {
         return "redirect:doc.html"
diff --git a/versions.kts b/versions.kts
new file mode 100644
index 0000000..e5d53d0
--- /dev/null
+++ b/versions.kts
@@ -0,0 +1,7 @@
+object Versions {
+    internal const val knife4j = "3.0.2"
+    internal const val mybatis_plus = "3.4.2"
+}
+
+object Deps {
+}
\ No newline at end of file