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 4c5bf59..6b64e26 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
@@ -17,10 +17,10 @@ repositories {
     mavenCentral()
 }
 
-sourceSets {
-    test {
-        runtimeClasspath = main.get().runtimeClasspath
-    }
+val testAgent = configurations.dependencyScope("mockitoAgent")
+val testAgentClasspath = configurations.resolvable("testAgentClasspath") {
+    isTransitive = false
+    extendsFrom(testAgent.get())
 }
 
 dependencies {
@@ -38,16 +38,22 @@ dependencies {
 
     implementation(libs.slf4j.api)
     "localRuntimeOnly"(libs.slf4j.rt)
+    testRuntimeOnly(libs.slf4j.rt)
 
     testImplementation(platform(libs.junit.platform))
     testImplementation(libs.junit.core)
+    testRuntimeOnly(libs.junit.launcher)
     testImplementation(libs.mockito)
+    testAgent(libs.mockito)
     testImplementation(libs.assertj)
 }
 
 
 tasks.test {
+    dependsOn(testAgentClasspath)
+
     useJUnitPlatform()
+    jvmArgs(testAgentClasspath.get().files.map { file -> "-javaagent:${file.absolutePath}" })
     systemProperties(
         "junit.jupiter.execution.timeout.mode" to "disabled_on_debug",
         "junit.jupiter.execution.timeout.testable.method.default" to "10s",
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 7f52b00..950b2fc 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -4,7 +4,7 @@ asm = "9.7"
 autoservice = "1.1.1"
 java = "8"
 jetbrains-annotations = "26.0.1"
-junit = "5.11.2"
+junit = "5.12.0"
 lombok = "1.18.34"
 mockito = "5.14.2"
 slf4j = "2.0.16"
@@ -18,6 +18,7 @@ autoservice-processor = { group = "com.google.auto.service", name = "auto-servic
 jetbrains-annotations = { group = "org.jetbrains", name = "annotations", version.ref = "jetbrains-annotations" }
 junit-platform = { group = "org.junit", name = "junit-bom", version.ref = "junit" }
 junit-core = { group = "org.junit.jupiter", name = "junit-jupiter" }
+junit-launcher = { group = "org.junit.platform", name = "junit-platform-launcher" }
 lombok = { group = "org.projectlombok", name = "lombok", version.ref = "lombok" }
 mockito = { group = "org.mockito", name = "mockito-core", version.ref = "mockito" }
 slf4j-api = { group = "org.slf4j", name = "slf4j-api", version.ref = "slf4j" }