diff --git a/build.gradle.kts b/build.gradle.kts
index 6896124..5b2553f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,7 +1,27 @@
 plugins {
-    id("java")
-    id("maven-publish")
+	`jacoco-report-aggregation`
+	`maven-publish`
 }
 
 group = "de.siphalor.tweed5"
 version = properties["version"]!!
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	rootProject.subprojects.forEach { subproject ->
+		subproject.plugins.withId("jacoco") {
+			jacocoAggregation(project(subproject.path))
+		}
+	}
+}
+
+reporting {
+	reports {
+		val aggregatedCoverageReport by creating(JacocoCoverageReport::class) {
+			testSuiteName = "test"
+		}
+	}
+}
diff --git a/buildSrc/src/main/kotlin/de.siphalor.tweed5.base-module.gradle.kts b/buildSrc/src/main/kotlin/de.siphalor.tweed5.base-module.gradle.kts
index d254976..700d9ef 100644
--- a/buildSrc/src/main/kotlin/de.siphalor.tweed5.base-module.gradle.kts
+++ b/buildSrc/src/main/kotlin/de.siphalor.tweed5.base-module.gradle.kts
@@ -1,6 +1,7 @@
 plugins {
     java
     `java-library`
+	jacoco
     `maven-publish`
     alias(libs.plugins.lombok)
     id("de.siphalor.tweed5.local-runtime-only")
@@ -61,6 +62,7 @@ tasks.compileTestJava {
 
 tasks.test {
     dependsOn(testAgentClasspath)
+	finalizedBy(tasks.jacocoTestReport)
 
     useJUnitPlatform()
     jvmArgs(testAgentClasspath.get().files.map { file -> "-javaagent:${file.absolutePath}" })
@@ -71,6 +73,10 @@ tasks.test {
     )
 }
 
+tasks.jacocoTestReport {
+    dependsOn(tasks.test)
+}
+
 publishing {
     publications {
         create<MavenPublication>("lib") {
diff --git a/buildSrc/src/main/kotlin/de.siphalor.tweed5.test-utils.gradle.kts b/buildSrc/src/main/kotlin/de.siphalor.tweed5.test-utils.gradle.kts
index e010c47..b4ac465 100644
--- a/buildSrc/src/main/kotlin/de.siphalor.tweed5.test-utils.gradle.kts
+++ b/buildSrc/src/main/kotlin/de.siphalor.tweed5.test-utils.gradle.kts
@@ -1,6 +1,3 @@
-import gradle.kotlin.dsl.accessors._182d53d78a136df48d95cf7411f9259f.lombok
-import org.gradle.kotlin.dsl.assign
-
 plugins {
 	java
 	alias(libs.plugins.lombok)