diff --git a/AlgebraicDataflowArchitectureModel/src/code/ast/ASTNode.java b/AlgebraicDataflowArchitectureModel/src/code/ast/ASTNode.java
index 0e250a1..202e700 100644
--- a/AlgebraicDataflowArchitectureModel/src/code/ast/ASTNode.java
+++ b/AlgebraicDataflowArchitectureModel/src/code/ast/ASTNode.java
@@ -1,6 +1,8 @@
 package code.ast;
 
-public abstract class ASTNode {
+import java.io.Serializable;
+
+public abstract class ASTNode implements Serializable{
 	private ASTNode parent;
 
 	public ASTNode getParent() {