diff --git a/library.json b/library.json
index 6e71acd..fe75a78 100644
--- a/library.json
+++ b/library.json
@@ -1,7 +1,7 @@
 {
   "name": "NtpClientLib",
   "frameworks": "arduino",
-  "version": "3.0.0beta",
+  "version": "3.0.0-beta",
   "keywords": "time, date, hour, minute, second, day, week, month, year, RTC, NTP",
   "platforms": ["atmelavr", "atmelsam", "espressif32", "espressif8266"],
   "description": "Library to get system sync from a NTP server",
diff --git a/library.properties b/library.properties
index dd53491..fb74835 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=NtpClientLib
-version=3.0.0beta
+version=3.0.0-beta
 author=German Martin
 maintainer=German Martin
 sentence=Ntp Client Library