diff --git a/build.gradle.kts b/build.gradle.kts
index c7737e7..501302a 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -7,10 +7,6 @@ plugins {
 group = "norangebit"
 version = "0.0.1"
 
-val arrowVersion = "0.8.2"
-val kluentVersion = "1.48"
-val koinVersion = "1.0.2"
-
 repositories {
     mavenCentral()
     jcenter()
@@ -18,13 +14,19 @@ repositories {
 
 dependencies {
     implementation(kotlin("stdlib-jdk8"))
-    implementation("io.arrow-kt:arrow-core:$arrowVersion")
-    implementation("org.koin:koin-core:$koinVersion")
+    implementation(Config.Libs.arrowCore)
+    implementation(Config.Libs.koin)
 
-    testImplementation("org.junit.jupiter:junit-jupiter-api:5.1.0")
-    testImplementation("org.amshove.kluent:kluent:$kluentVersion")
+    testImplementation(Config.Libs.junit)
+    testImplementation(Config.Libs.kluent)
+    // testImplementation(Config.Libs.spekDsl)
+
+    // testRuntimeOnly(Config.Libs.kotlinReflect)
+    // testRuntimeOnly(Config.Libs.spekRunner)
 }
 
 tasks.withType<KotlinCompile> {
     kotlinOptions.jvmTarget = "1.8"
-}
\ No newline at end of file
+}
+
+tasks.register("ktlint", Ktlint::class)
\ No newline at end of file
diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
new file mode 100644
index 0000000..81089aa
--- /dev/null
+++ b/buildSrc/build.gradle.kts
@@ -0,0 +1,32 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2019 norangebit
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    jcenter()
+}
diff --git a/buildSrc/src/main/java/Config.kt b/buildSrc/src/main/java/Config.kt
new file mode 100644
index 0000000..18f2e2c
--- /dev/null
+++ b/buildSrc/src/main/java/Config.kt
@@ -0,0 +1,45 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2019 norangebit
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+object Config {
+    object Versions {
+        val arrow = "0.8.2"
+        val kluent = "1.48"
+        val koin = "1.0.2"
+        val junit = "5.1.0"
+        val spek = "2.0.1"
+        val kotlin = "1.3.21."
+    }
+
+    object Libs {
+        val arrowCore = "io.arrow-kt:arrow-core:${Versions.arrow}"
+        val koin = "org.koin:koin-core:${Versions.koin}"
+        val junit = "org.junit.jupiter:junit-jupiter-api:${Versions.junit}"
+        val kluent = "org.amshove.kluent:kluent:${Versions.kluent}"
+        val spekDsl = "org.spekframework.spek2:spek-dsl-jvm:${Versions.spek}"
+        val kotlinReflect = "org.jetbrains.kotlin:kotlin-reflect:${Versions.kotlin}"
+        val spekRunner = "org.spekframework.spek2:spek-runner-junit5:${Versions.spek}"
+    }
+}
\ No newline at end of file
diff --git a/buildSrc/src/main/java/Ktlint.kt b/buildSrc/src/main/java/Ktlint.kt
new file mode 100644
index 0000000..cd4f19b
--- /dev/null
+++ b/buildSrc/src/main/java/Ktlint.kt
@@ -0,0 +1,41 @@
+import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.TaskAction
+
+/*
+ * MIT License
+ *
+ * Copyright (c) 2019 norangebit
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+open class Ktlint : DefaultTask() {
+
+    @TaskAction
+    fun run() {
+        val input = Runtime.getRuntime().exec("ktlint").inputStream
+
+        input.reader().readLines().forEach {
+            println(it)
+        }
+
+        Runtime.getRuntime().exec("ktlint -F")
+    }
+}
\ No newline at end of file