diff --git a/rhubarb/build.gradle.kts b/rhubarb/build.gradle.kts
new file mode 100644
index 0000000..91a8f00
--- /dev/null
+++ b/rhubarb/build.gradle.kts
@@ -0,0 +1,59 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+	kotlin("jvm") version "1.3.50"
+}
+
+repositories {
+	mavenCentral()
+	jcenter()
+}
+
+dependencies {
+	implementation(kotlin("stdlib-jdk8"))
+	implementation("org.apache.commons:commons-lang3:3.9")
+	implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.2")
+
+	// Unit testing
+	val spekVersion = "2.0.8"
+	testImplementation("org.spekframework.spek2:spek-dsl-jvm:$spekVersion")
+	testRuntimeOnly("org.spekframework.spek2:spek-runner-junit5:$spekVersion")
+	testCompile("org.assertj:assertj-core:3.11.1")
+}
+
+val distsDirName = convention.getPlugin(BasePluginConvention::class).distsDirName
+var distDirectory = File(project.buildDir, distsDirName)
+
+tasks {
+	withType<KotlinCompile> {
+		kotlinOptions.jvmTarget = "1.8"
+		// kotlinOptions.allWarningsAsErrors = true
+		kotlinOptions.freeCompilerArgs += "-Xuse-experimental=kotlin.ExperimentalUnsignedTypes"
+		kotlinOptions.freeCompilerArgs += "-Xinline-classes"
+	}
+
+	test {
+		useJUnitPlatform {
+			includeEngines("spek2")
+		}
+	}
+
+	val copyDoc by creating(Copy::class) {
+		from("README.adoc")
+		into(distDirectory)
+	}
+
+	assemble {
+		dependsOn(copyDoc)
+	}
+
+	jar {
+		destinationDirectory.set(distDirectory)
+
+		manifest {
+			attributes("Main-Class" to "com.rhubarb_lip_sync.rhubarb_for_spine.MainKt")
+		}
+
+		from(configurations.compileClasspath.get().map { if (it.isDirectory) it else zipTree(it) })
+	}
+}
diff --git a/rhubarb/src/main/kotlin/Package.kt b/rhubarb/src/main/kotlin/Package.kt
new file mode 100644
index 0000000..d613299
--- /dev/null
+++ b/rhubarb/src/main/kotlin/Package.kt
@@ -0,0 +1 @@
+package com.rhubarb_lip_sync
diff --git a/rhubarb/src/test/kotlin/Package.kt b/rhubarb/src/test/kotlin/Package.kt
new file mode 100644
index 0000000..d613299
--- /dev/null
+++ b/rhubarb/src/test/kotlin/Package.kt
@@ -0,0 +1 @@
+package com.rhubarb_lip_sync
diff --git a/settings.gradle.kts b/settings.gradle.kts
index fdf105a..74cf924 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -1,5 +1,6 @@
 rootProject.name = "rhubarb-lip-sync"
 
+include("rhubarb")
 include("rhubarb-for-after-effects")
 include("rhubarb-for-spine")
 include("rhubarb-for-vegas")