diff --git a/build.gradle b/build.gradle
index 32f00bc..c988f9b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,8 +8,12 @@ repositories {
 }
 
 dependencies {
-    implementation group: 'org.codehaus.groovy', name: 'groovy-all', version: '3.0.13'
-    implementation group: 'commons-io', name: 'commons-io', version: '2.11.0'
+    implementation platform('org.apache.groovy:groovy-bom:4.0.5')
+    implementation 'org.apache.groovy:groovy'
+    implementation 'commons-io:commons-io:2.11.0'
+
+    testImplementation platform("org.spockframework:spock-bom:2.3-groovy-4.0")
+    testImplementation "org.spockframework:spock-core"
 }
 
 application {
diff --git a/src/test/groovy/de/daggit/domap/stich/StichterSpec.groovy b/src/test/groovy/de/daggit/domap/stich/StichterSpec.groovy
new file mode 100644
index 0000000..5721139
--- /dev/null
+++ b/src/test/groovy/de/daggit/domap/stich/StichterSpec.groovy
@@ -0,0 +1,13 @@
+package de.daggit.domap.stich
+
+import spock.lang.Specification
+
+class StichterSpec extends Specification {
+
+    def "Leerer Test"() {
+        when:
+        def a = "Leer"
+        then:
+        a == "Leer"
+    }
+}