diff --git a/library.json b/library.json
index 3592d88..cde7b40 100644
--- a/library.json
+++ b/library.json
@@ -18,5 +18,6 @@
   "version": "0.2.3",
   "license": "MIT",
   "frameworks": "arduino",
-  "platforms": "*"
+  "platforms": "*",
+  "headers": "ParallelPrinter.h"
 }