diff --git a/library.properties b/library.properties
index fa6ae2a..1e3a8ab 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=NeoGPS
-version=4.2.8
+version=4.2.9
 author=SlashDevin
 maintainer=SlashDevin
 sentence=NMEA and ublox GPS parser, configurable to use as few as 10 bytes of RAM
diff --git a/src/ublox/PUBX_cfg.h b/src/ublox/PUBX_cfg.h
new file mode 100644
index 0000000..7db9633
--- /dev/null
+++ b/src/ublox/PUBX_cfg.h
@@ -0,0 +1,14 @@
+#ifndef PUBX_CFG_H
+#define PUBX_CFG_H
+
+//------------------------------------------------------------
+// Enable/disable the parsing of specific proprietary NMEA sentences.
+//
+// Configuring out a sentence prevents its fields from being parsed.
+// However, the sentence type may still be recognized by /decode/ and 
+// stored in member /nmeaMessage/.  No valid flags would be available.
+
+#define NMEAGPS_PARSE_PUBX_00
+//#define NMEAGPS_PARSE_PUBX_04
+
+#endif
\ No newline at end of file