diff --git a/build.gradle.kts b/build.gradle.kts
index b917fc6..edc7fc0 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,7 +1,7 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-    kotlin("jvm") version "1.3.50"
+    kotlin("jvm") version "1.3.72"
     id("com.github.johnrengelman.shadow") version "5.1.0" apply true
     application
 }
@@ -9,11 +9,10 @@ plugins {
 group = "moe.kageru"
 version = "0.1.0"
 
-val mainClass = "moe.kageru.kodeshare.KodeshareKt"
 application {
-    mainClassName = mainClass
+    mainClassName = "moe.kageru.kodeshare.KodeshareKt"
 }
-val ktorVersion = "1.2.4"
+val ktorVersion = "1.3.1"
 
 repositories {
     mavenCentral()
@@ -28,12 +27,12 @@ dependencies {
     implementation("io.ktor:ktor-locations:$ktorVersion")
     implementation("io.ktor:ktor-server-core:$ktorVersion")
     implementation("io.ktor:ktor-html-builder:$ktorVersion")
-    implementation("org.jetbrains.exposed:exposed:0.17.3")
-    implementation("org.jetbrains:kotlin-css-jvm:1.0.0-pre.83-kotlin-1.3.50")
-    implementation("org.mariadb.jdbc:mariadb-java-client:2.4.4")
-    implementation("com.uchuhimo:konf-core:0.20.0")
+    implementation("org.jetbrains.exposed:exposed:0.17.7")
+    implementation("org.jetbrains:kotlin-css-jvm:1.0.0-pre.104-kotlin-1.3.72")
+    implementation("org.mariadb.jdbc:mariadb-java-client:2.6.0")
+    implementation("com.uchuhimo:konf-core:0.22.1")
 }
 
 tasks.withType<KotlinCompile> {
-    kotlinOptions.jvmTarget = "1.8"
+    kotlinOptions.jvmTarget = "11"
 }