diff --git a/org.jacoco.core.test.validation.groovy/pom.xml b/org.jacoco.core.test.validation.groovy/pom.xml
index a90dc05c55..f1857fb98d 100644
--- a/org.jacoco.core.test.validation.groovy/pom.xml
+++ b/org.jacoco.core.test.validation.groovy/pom.xml
@@ -26,7 +26,7 @@
   <name>JaCoCo :: Test :: Core :: Validation Groovy</name>
 
   <properties>
-    <gmaven.version>1.12.1</gmaven.version>
+    <gmaven.version>1.13.0</gmaven.version>
     <groovy.version>3.0.8</groovy.version>
   </properties>
 
diff --git a/org.jacoco.core.test.validation/pom.xml b/org.jacoco.core.test.validation/pom.xml
index 79e98a0bb6..46041095b2 100644
--- a/org.jacoco.core.test.validation/pom.xml
+++ b/org.jacoco.core.test.validation/pom.xml
@@ -324,8 +324,7 @@
       <properties>
         <!-- Kotlin 1.5.0 doesn't support compilation into 17 -->
         <kotlin.compiler.jvmTarget>16</kotlin.compiler.jvmTarget>
-        <!-- while Groovy 3.0.8 supports compilation into 17, gmavenplus-plugin 1.12.1 doesn't -->
-        <groovy.targetBytecode>16</groovy.targetBytecode>
+        <groovy.targetBytecode>17</groovy.targetBytecode>
         <!-- see respective profile in org.jacoco.build about this override -->
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>