diff --git a/deegree-services/deegree-webservices-handbook/pom.xml b/deegree-services/deegree-webservices-handbook/pom.xml
index a5e8686c24..6abd885ef3 100644
--- a/deegree-services/deegree-webservices-handbook/pom.xml
+++ b/deegree-services/deegree-webservices-handbook/pom.xml
@@ -11,7 +11,6 @@
     <version>3.4.9-SNAPSHOT</version>
   </parent>
 
-
   <properties>
     <revdate>${maven.build.timestamp}</revdate>
     <revnumber>${project.version}</revnumber>
@@ -36,7 +35,6 @@
       <plugin>
         <groupId>org.asciidoctor</groupId>
         <artifactId>asciidoctor-maven-plugin</artifactId>
-        <version>1.6.0</version>
         <dependencies>
           <dependency>
             <groupId>org.asciidoctor</groupId>
@@ -84,7 +82,6 @@
       </plugin>
       <plugin>
         <artifactId>maven-assembly-plugin</artifactId>
-        <version>3.1.1</version>
         <executions>
           <execution>
             <id>deegree-core-assembly</id>
diff --git a/pom.xml b/pom.xml
index 6efbd8a279..73e52acb84 100644
--- a/pom.xml
+++ b/pom.xml
@@ -232,6 +232,11 @@
           <artifactId>maven-scm-plugin</artifactId>
           <version>1.5</version>
         </plugin>
+        <plugin>
+          <groupId>org.asciidoctor</groupId>
+          <artifactId>asciidoctor-maven-plugin</artifactId>
+          <version>1.6.0</version>
+        </plugin>
       </plugins>
     </pluginManagement>