diff --git a/ChangeLog b/ChangeLog
index e53a8f69..2d87b42d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2018-06-19  Theppitak Karoonboonyanan  <theppitak@gmail.com>
+
+	* configure.ac:
+	  - Bump library revision to reflect code changes.
+
+	* NEWS:
+	=== Version 0.2.12 ===
+
 2018-06-19  Theppitak Karoonboonyanan  <theppitak@gmail.com>
 
 	Use HTTPS in URL
diff --git a/NEWS b/NEWS
index 165ffa04..9d011a93 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,14 @@
 libdatrie
 
+0.2.12 (2018-06-19)
+======
+- More C90 (ANSI C) compliance.
+  (Thanks Peter Moulder for the patch)
+- Prevent some compiling conflicts with other sources.
+  (Thanks Peter Moulder for the patch)
+- Fix miscellaneous compiler warnings.
+- Prevent trimming on extremely long dictionary path names.
+
 0.2.11 (2018-04-23)
 ======
 - Detect iconv() error more correctly in trietool.
diff --git a/configure.ac b/configure.ac
index 41249b91..e477b2ff 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,7 +17,7 @@ AM_INIT_AUTOMAKE(dist-xz no-dist-gzip)
 # Interfaces added:              CURRENT++  REVISION=0  AGE++
 # Interfaces changed/removed:    CURRENT++  REVISION=0  AGE=0
 LT_CURRENT=4
-LT_REVISION=4
+LT_REVISION=5
 LT_AGE=3
 AC_SUBST(LT_CURRENT)
 AC_SUBST(LT_REVISION)