diff --git a/library/pom.xml b/library/pom.xml
index 318d2223..a88f9c6c 100644
--- a/library/pom.xml
+++ b/library/pom.xml
@@ -48,6 +48,8 @@
 		<maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
 		<maven.compiler.source>1.8</maven.compiler.source>
 		<maven.compiler.target>1.8</maven.compiler.target>
+		<maven.deploy.skip>true</maven.deploy.skip><!-- do deploy to maven central, parent project does not and inherits -->
+
 	</properties>
 	<dependencies>
 		<!-- https://mvnrepository.com/artifact/net.sf.saxon/Saxon-HE -->
diff --git a/pom.xml b/pom.xml
index f8bacf91..ebd0d717 100644
--- a/pom.xml
+++ b/pom.xml
@@ -158,6 +158,8 @@
         <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.deploy.skip>true</maven.deploy.skip><!-- prevent this to be deployed to maven central as "core",
+        we only want submodules, see also https://stackoverflow.com/questions/7446599/how-to-deploy-only-the-sub-modules-using-maven-deploy-->
     </properties>
 
     <mailingLists>
diff --git a/validator/pom.xml b/validator/pom.xml
index 5e8597b2..97ec12c2 100644
--- a/validator/pom.xml
+++ b/validator/pom.xml
@@ -27,6 +27,8 @@
     </repositories>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.deploy.skip>false</maven.deploy.skip><!-- do deploy to maven central, parent project does not and inherits -->
+
     </properties>
     <dependencies>
         <!-- for java9 -->