diff --git a/api/build.gradle b/api/build.gradle
index 2c078e3..725dd0b 100644
--- a/api/build.gradle
+++ b/api/build.gradle
@@ -1,17 +1,3 @@
-plugins {
-    id 'java'
-    id 'org.jetbrains.kotlin.jvm'
-}
-
-group 'io.bartek'
-version '1.0-SNAPSHOT'
-
-sourceCompatibility = 1.8
-
-repositories {
-    mavenCentral()
-}
-
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
     testCompile group: 'junit', name: 'junit', version: '4.12'
@@ -20,9 +6,3 @@ dependencies {
     }
 }
 
-compileKotlin {
-    kotlinOptions.jvmTarget = "1.8"
-}
-compileTestKotlin {
-    kotlinOptions.jvmTarget = "1.8"
-}
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index d8e30b9..880ce87 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,17 +1,3 @@
-plugins {
-    id 'java'
-    id 'org.jetbrains.kotlin.jvm'
-}
-
-group 'io.bartek'
-version '1.0-SNAPSHOT'
-
-sourceCompatibility = 1.8
-
-repositories {
-    mavenCentral()
-}
-
 dependencies {
     compile project(':api')
     compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
@@ -20,13 +6,6 @@ dependencies {
     compile group: 'org.pf4j', name: 'pf4j', version: '3.2.0'
 }
 
-compileKotlin {
-    kotlinOptions.jvmTarget = "1.8"
-}
-compileTestKotlin {
-    kotlinOptions.jvmTarget = "1.8"
-}
-
 jar {
     zip64 true
     manifest {
diff --git a/build.gradle b/build.gradle
index 9a1fc8d..5dbffb1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,32 +1,43 @@
 plugins {
-    id 'java'
-    id 'org.jetbrains.kotlin.jvm' version '1.3.61'
+    id 'org.jetbrains.kotlin.jvm' version '1.3.61' apply false
 }
 
-subprojects {
+allprojects {
+    apply plugin: 'java'
+    apply plugin: 'org.jetbrains.kotlin.jvm'
+
     repositories {
         mavenLocal()
         mavenCentral()
     }
+
+    group 'io.bartek'
+    version '1.0-SNAPSHOT'
+
+    sourceCompatibility = 1.8
+
+    compileKotlin {
+        kotlinOptions.jvmTarget = "1.8"
+    }
+    compileTestKotlin {
+        kotlinOptions.jvmTarget = "1.8"
+    }
 }
 
 ext.pluginsDir = rootProject.buildDir.path + '/modules'
 
-group 'io.bartek'
-version '1.0-SNAPSHOT'
-
-sourceCompatibility = 1.8
-
 repositories {
     mavenCentral()
 }
 
-dependencies {
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-    compile group: 'org.jetbrains.kotlin', name: 'kotlin-reflect', version: '1.3.61'
-    testCompile group: 'junit', name: 'junit', version: '4.12'
-    compile group: 'org.pf4j', name: 'pf4j', version: '3.2.0'
+clean {
+    dependsOn ':app:clean'
+    dependsOn ':api:clean'
+    dependsOn ':modules:clean'
 }
 
-build.dependsOn ':app:jar'
-
+build {
+    dependsOn ':app:jar'
+    dependsOn ':api:build'
+    dependsOn ':modules:build'
+}
diff --git a/modules/build.gradle b/modules/build.gradle
index e69de29..ccefe10 100644
--- a/modules/build.gradle
+++ b/modules/build.gradle
@@ -0,0 +1,51 @@
+subprojects {
+    apply plugin: 'kotlin-kapt'
+
+    dependencies {
+        // compileOnly important!!! We do not want to put the api into the zip file since the main program has it already!
+        compileOnly project(':api')
+        compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+        kapt(group: 'org.pf4j', name: 'pf4j', version: "3.2.0")
+        compileOnly(group: 'org.pf4j', name: 'pf4j', version: "3.2.0") {
+            exclude group: "org.slf4j"
+        }
+        compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.5'
+        testCompile group: 'junit', name: 'junit', version: '4.+'
+    }
+
+    jar {
+        manifest {
+            attributes 'Plugin-Id': "${pluginId}",
+                    'Plugin-Class': "${pluginClass}",
+                    'Plugin-Version': "${pluginVersion}",
+                    'Plugin-Provider': "${pluginProvider}",
+                    'Plugin-Dependencies': "${pluginDependencies}"
+        }
+    }
+
+    task plugin(type: Jar) {
+        archiveBaseName = "plugin-${pluginId}"
+        into('classes') {
+            with jar
+        }
+        into('lib') {
+            from configurations.compile
+        }
+        archiveExtension = 'zip'
+    }
+
+    task assemblePlugin(type: Copy) {
+        from jar
+        into pluginsDir
+    }
+}
+
+clean {
+    dependsOn subprojects.clean
+}
+
+task assemblePlugins(type: Copy) {
+    dependsOn subprojects.assemblePlugin
+}
+
+build.dependsOn assemblePlugins
\ No newline at end of file
diff --git a/modules/lang/build.gradle b/modules/lang/build.gradle
index abfc6a1..e69de29 100644
--- a/modules/lang/build.gradle
+++ b/modules/lang/build.gradle
@@ -1,61 +0,0 @@
-buildscript {
-    repositories {
-        mavenCentral()
-    }
-    dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.61"
-    }
-}
-
-plugins {
-    id 'java'
-    id 'org.jetbrains.kotlin.jvm'
-    id 'kotlin-kapt'
-}
-
-group 'io.bartek'
-version '1.0-SNAPSHOT'
-
-sourceCompatibility = 1.8
-
-repositories {
-    mavenCentral()
-}
-
-jar {
-    manifest {
-        attributes 'Plugin-Id': "${pluginId}",
-                'Plugin-Class': "${pluginClass}",
-                'Plugin-Version': "${pluginVersion}",
-                'Plugin-Provider': "${pluginProvider}",
-                'Plugin-Dependencies': "${pluginDependencies}"
-    }
-}
-
-task plugin(type: Jar) {
-    archiveBaseName = "plugin-${pluginId}"
-    into('classes') {
-        with jar
-    }
-    into('lib') {
-        from configurations.compile
-    }
-    archiveExtension = 'zip'
-}
-
-task assemblePlugin(type: Copy) {
-    from jar
-    into pluginsDir
-}
-
-dependencies {
-    // compileOnly important!!! We do not want to put the api into the zip file since the main program has it already!
-    compileOnly project(':api')
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-    kapt(group: 'org.pf4j', name: 'pf4j', version: "3.2.0")
-    compileOnly(group: 'org.pf4j', name: 'pf4j', version: "3.2.0") {
-        exclude group: "org.slf4j"
-    }
-    compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.5'
-    testCompile group: 'junit', name: 'junit', version: '4.+'
-}
\ No newline at end of file