diff --git a/ChangeLog b/ChangeLog
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+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2016-12-25  Theppitak Karoonboonyanan <theppitak@gmail.com>
+
+	* NEWS:
+	  === Version 0.5.5 ===
+
 2016-12-15  Theppitak Karoonboonyanan <theppitak@gmail.com>
 
 	Update dictionary from thailatex GitHub.
diff --git a/NEWS b/NEWS
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+++ b/NEWS
@@ -1,3 +1,7 @@
+0.5.5 (2016-12-25)
+=====
+- Updated word break dictionary.
+
 0.5.4 (2016-07-08)
 =====
 - Updated word break dictionary.