diff --git a/src/main/java/org/gcube/common/authorization/library/policies/Policy.java b/src/main/java/org/gcube/common/authorization/library/policies/Policy.java
index d83be30..a72330e 100644
--- a/src/main/java/org/gcube/common/authorization/library/policies/Policy.java
+++ b/src/main/java/org/gcube/common/authorization/library/policies/Policy.java
@@ -26,6 +26,10 @@ public abstract class Policy {
 	
 	public abstract Calendar getLastUpdateTime();
 	
+	public abstract void setCreationTime(Calendar creationTime);
+	
+	public abstract void setLastUpdateTime(Calendar lastUpdateTime);
+	
 	public abstract String getContext();
 	
 	public abstract Action getMode();