diff --git a/build.gradle b/build.gradle
index c45110ddaff3f4a744bffa0e0a923191ce443409..ab23830720fd7268dec8cdf4c1b7acf3409b4af6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,18 +1,16 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-    ext.kotlin_version = '1.3.72'
-    ext.ktor_version = '1.3.2'
-    ext.serialization_version = '0.20.0'
+    ext.kotlin_version = '1.5.0'
+    ext.ktor_version = '1.4.3'
+    ext.serialization_version = '0.2.1'
 
     repositories {
-        google()
-        jcenter()
+        mavenCentral()
         maven { url "https://kotlin.bintray.com/kotlinx" }
         maven { url "https://plugins.gradle.org/m2/" }
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "org.jetbrains.kotlin:kotlin-serialization:$kotlin_version"
 
@@ -23,8 +21,9 @@ buildscript {
 
 allprojects {
     repositories {
-        google()
-        jcenter()
+        mavenCentral()
+        maven { url "https://maven.pkg.jetbrains.space/public/p/kotlinx-html/maven" }
+        maven { url "https://kotlin.bintray.com/kotlinx" }
         maven { url 'https://kotlin.bintray.com/ktor' }
     }
 }
diff --git a/docs/build.gradle b/docs/build.gradle
index 7e5495a63ca855cd9d10114b59e5eef8498ac572..d2956e095838267503bd9f0f3bda1944fe0bb9dd 100644
--- a/docs/build.gradle
+++ b/docs/build.gradle
@@ -15,7 +15,7 @@ dependencies {
     implementation "io.ktor:ktor-server-core:$ktor_version"
     implementation "io.ktor:ktor-auth:$ktor_version"
 
-    implementation "org.jetbrains.kotlinx:kotlinx-html-jvm:0.7.1"
+    implementation "org.jetbrains.kotlinx:kotlinx-html-jvm:0.7.3"
 
     implementation "com.atlassian.commonmark:commonmark:0.15.2"
 }
diff --git a/example/build.gradle b/example/build.gradle
index a2fa245f21034f0f55b07a7e752938abec4ff0d8..8103fa9479e0caf1f67274d374e1e1beb7fabeb0 100644
--- a/example/build.gradle
+++ b/example/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'kotlin'
 apply plugin: 'application'
 
 group 'me.jfenn'
-version '0.0.1'
+version '0.0.2'
 mainClassName = "io.ktor.server.netty.EngineMain"
 
 sourceSets {
@@ -16,7 +16,6 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
     implementation "io.ktor:ktor-server-netty:$ktor_version"
     implementation "io.ktor:ktor-auth:$ktor_version"
-    implementation "ch.qos.logback:logback-classic:$logback_version"
     testImplementation "io.ktor:ktor-server-tests:$ktor_version"
 
     implementation project(':docs')
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 7c4388a92162482ab4a8c4f73540e01782628703..da9702f9e70d99d587ce73bbfb0c212fc66e24c9 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists