diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index 73479bc6e..6a92b081b 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -1,14 +1,19 @@
-repositories {
-    jcenter()
-    google()
-}
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
+    kotlin("jvm") version "1.4.0"
     `kotlin-dsl`
 }
 
+repositories {
+    jcenter()
+    google()
+}
+
 dependencies {
-    implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.0-rc")
+    implementation(kotlin("gradle-plugin"))
+    implementation(kotlin("stdlib-jdk8"))
+    implementation(kotlin("reflect"))
     implementation("org.jetbrains.dokka:dokka-gradle-plugin:0.10.1")
     implementation("com.android.tools.build:gradle:4.0.1")
 }
@@ -16,3 +21,9 @@ dependencies {
 kotlinDslPluginOptions {
     experimentalWarning.set(false)
 }
+
+tasks.withType<KotlinCompile>().configureEach {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
diff --git a/buildSrc/src/main/kotlin/Dependencies.kt b/buildSrc/src/main/kotlin/Dependencies.kt
index cac7b84b3..0d69da622 100644
--- a/buildSrc/src/main/kotlin/Dependencies.kt
+++ b/buildSrc/src/main/kotlin/Dependencies.kt
@@ -1,7 +1,7 @@
 object Versions {
-    const val kotlin = "1.4.0-rc"
-    const val serialization = "1.0-M1-1.4.0-rc"
-    const val atomicfu = "0.14.3-1.4.0-rc"
+    const val kotlin = "1.4.0"
+    const val serialization = "1.0.0-RC"
+    const val atomicfu = "0.14.4"
     const val androidxTest = "1.2.0"
     const val googleTruth = "1.0.1"
     const val kotlinpoet = "1.6.0"
@@ -10,7 +10,7 @@ object Versions {
 
 object Libs {
     object Serialization {
-        const val runtime = "org.jetbrains.kotlinx:kotlinx-serialization-runtime:${Versions.serialization}"
+        const val core = "org.jetbrains.kotlinx:kotlinx-serialization-core:${Versions.serialization}"
     }
 
     object AtomicFU {
diff --git a/core/build.gradle.kts b/core/build.gradle.kts
index 075cde9d6..4b0407a89 100644
--- a/core/build.gradle.kts
+++ b/core/build.gradle.kts
@@ -30,38 +30,12 @@ kotlin {
                 implementation(Libs.googleTruth)
             }
         }
-
-        val darwinMain by getting {
-            dependencies {
-                implementation(Libs.AtomicFU.runtime)
-            }
-        }
     }
 }
 
 tasks.withType<DokkaTask>().configureEach {
     multiplatform {
         create("global") {
-            perPackageOption {
-                prefix = "io.islandtime.internal"
-                suppress = true
-            }
-
-            perPackageOption {
-                prefix = "io.islandtime.measures.internal"
-                suppress = true
-            }
-
-            perPackageOption {
-                prefix = "io.islandtime.parser.internal"
-                suppress = true
-            }
-
-            perPackageOption {
-                prefix = "io.islandtime.ranges.internal"
-                suppress = true
-            }
-
             perPackageOption {
                 includes = listOf("packages.md")
             }
diff --git a/extensions/serialization/build.gradle.kts b/extensions/serialization/build.gradle.kts
index a11b97829..c41cf26bd 100644
--- a/extensions/serialization/build.gradle.kts
+++ b/extensions/serialization/build.gradle.kts
@@ -8,7 +8,7 @@ kotlin {
         val commonMain by getting {
             dependencies {
                 implementation(project(":core"))
-                implementation(Libs.Serialization.runtime)
+                implementation(Libs.Serialization.core)
             }
         }
 
diff --git a/settings.gradle.kts b/settings.gradle.kts
index ec7ea0281..3b288b38f 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -1,10 +1,3 @@
-pluginManagement {
-    repositories {
-        maven(url = "https://dl.bintray.com/kotlin/kotlin-eap")
-        gradlePluginPortal()
-    }
-}
-
 include(
     ":core",
     ":tools:code-generator",