diff --git a/.gitignore b/.gitignore
index 72355c9..220085a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@
 .settings
 target
 certificates
+.idea/
+*.iml
\ No newline at end of file
diff --git a/src/main/java/com/ryantenney/passkit4j/Pass.java b/src/main/java/com/ryantenney/passkit4j/Pass.java
index 8e395ef..9d97970 100644
--- a/src/main/java/com/ryantenney/passkit4j/Pass.java
+++ b/src/main/java/com/ryantenney/passkit4j/Pass.java
@@ -88,6 +88,9 @@ public class Pass {
 	// NFC Keys
 	private NFC nfc;
 
+	// Extended properties
+	@JsonInclude(Include.NON_DEFAULT) private boolean sharingProhibited = false;
+
 
 	@JsonIgnore private PassInformation passInformation;
 	@JsonIgnore private List<NamedInputStreamSupplier> files;