diff --git a/api/build.gradle b/api/build.gradle
index 5a7c8119..3f609172 100644
--- a/api/build.gradle
+++ b/api/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
 
 android {
diff --git a/app/build.gradle b/app/build.gradle
index 07f303c5..9969a26c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
 
 android {
diff --git a/build.gradle b/build.gradle
index 3ccdde58..40a2ddf6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.4.10'
+    ext.kotlin_version = '1.4.20'
 
     repositories {
         google()
diff --git a/db/build.gradle b/db/build.gradle
index 435172a6..9630383f 100644
--- a/db/build.gradle
+++ b/db/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
 
 android {
diff --git a/gradle.properties b/gradle.properties
index 7363cef4..70ede94b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -12,6 +12,7 @@ org.gradle.jvmargs=-Xmx1536m
 android.databinding.incremental=true
 kapt.incremental.apt=true
 org.gradle.parallel=true
+kotlin.parallel.tasks.in.project=true
 android.defaults.buildfeatures.buildconfig=false