diff --git a/backend/mirai-console/build.gradle.kts b/backend/mirai-console/build.gradle.kts
index 331694a36..556a66ab5 100644
--- a/backend/mirai-console/build.gradle.kts
+++ b/backend/mirai-console/build.gradle.kts
@@ -59,10 +59,11 @@ dependencies {
     compileAndRuntime("net.mamoe:mirai-core:${Versions.core}")
     compileAndRuntime(kotlin("stdlib-jdk8", Versions.kotlinStdlib))
 
-    implementation(kotlinx("serialization-runtime", Versions.serialization))
+    implementation(kotlinx("serialization-core", Versions.serialization))
     implementation(kotlin("reflect"))
 
-    implementation("net.mamoe.yamlkt:yamlkt:0.3.1")
+    implementation("net.mamoe.yamlkt:yamlkt:0.3.3")
+    implementation("org.jetbrains.kotlinx:atomicfu:${Versions.atomicFU}")
     api("org.jetbrains:annotations:19.0.0")
     api(kotlinx("coroutines-jdk8", Versions.coroutines))
 
@@ -70,7 +71,7 @@ dependencies {
 
     //api(kotlinx("collections-immutable", Versions.collectionsImmutable))
 
-    testApi(kotlinx("serialization-runtime", Versions.serialization))
+    testApi(kotlinx("serialization-core", Versions.serialization))
     testApi("net.mamoe:mirai-core-qqandroid:${Versions.core}")
     testApi(kotlin("stdlib-jdk8"))
     testApi(kotlin("test"))
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/description/CommandArgumentContext.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/description/CommandArgumentContext.kt
index 2009f1267..47464eb95 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/description/CommandArgumentContext.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/command/description/CommandArgumentContext.kt
@@ -168,7 +168,7 @@ public inline fun CommandArgumentContext(block: CommandArgumentContextBuilder.()
  * @see CommandArgumentContext
  */
 public class CommandArgumentContextBuilder : MutableList<ParserPair<*>> by mutableListOf() {
-    @JvmName("add")
+    @JvmName("add") // TODO: 2020/8/19 java class support
     public inline infix fun <T : Any> KClass<T>.with(parser: CommandArgumentParser<T>): ParserPair<*> =
         ParserPair(this, parser).also { add(it) }
 
diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index 42232d8f9..e5763c011 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -23,13 +23,13 @@ dependencies {
     api("org.jsoup:jsoup:1.12.1")
 
     api("com.google.code.gson:gson:2.8.6")
-    api(kotlinx("coroutines-core", "1.3.3"))
-    api(ktor("client-core", "1.3.2"))
-    api(ktor("client-cio", "1.3.2"))
-    api(ktor("client-json", "1.3.2"))
+    api(kotlinx("coroutines-core", "1.3.9"))
+    api(ktor("client-core", "1.4.0"))
+    api(ktor("client-cio", "1.4.0"))
+    api(ktor("client-json", "1.4.0"))
 
     compileOnly(gradleApi())
-    compileOnly("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.0-rc")
+    compileOnly("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.0")
     compileOnly("com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.5")
     api("com.github.jengelman.gradle.plugins:shadow:6.0.0")
 }
\ No newline at end of file
diff --git a/buildSrc/src/main/kotlin/PublishingHelpers.kt b/buildSrc/src/main/kotlin/PublishingHelpers.kt
index 32f80ed76..26f36ae06 100644
--- a/buildSrc/src/main/kotlin/PublishingHelpers.kt
+++ b/buildSrc/src/main/kotlin/PublishingHelpers.kt
@@ -1,4 +1,4 @@
-@file:Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")
+@file:Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE", "NOTHING_TO_INLINE", "RemoveRedundantBackticks")
 
 import org.gradle.api.Project
 import org.gradle.api.Task
diff --git a/buildSrc/src/main/kotlin/Versions.kt b/buildSrc/src/main/kotlin/Versions.kt
index 67b549429..fa5bb9060 100644
--- a/buildSrc/src/main/kotlin/Versions.kt
+++ b/buildSrc/src/main/kotlin/Versions.kt
@@ -17,7 +17,7 @@
  */
 
 object Versions {
-    const val core = "1.2.0"
+    const val core = "1.2.1"
     const val console = "1.0-M2"
     const val consoleGraphical = "0.0.7"
     const val consoleTerminal = "0.1.0"
@@ -30,6 +30,7 @@ object Versions {
     const val collectionsImmutable = "0.3.2"
     const val serialization = "1.0.0-RC"
     const val ktor = "1.4.0"
+    const val atomicFU = "0.14.4"
 
     const val androidGradle = "3.6.2"