diff --git a/NEWS b/NEWS
index 890c258..ef87dad 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,10 @@
+Overview of changes leading to 2.3.1
+Wednesday, January 30, 2019
+====================================
+- AAT bug fixes.
+- Misc internal housekeeping cleanup.
+
+
 Overview of changes leading to 2.3.0
 Thursday, December 20, 2018
 ====================================
diff --git a/configure.ac b/configure.ac
index 989de12..b7827a6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 AC_PREREQ([2.64])
 AC_INIT([HarfBuzz],
-        [2.3.0],
+        [2.3.1],
         [https://github.com/harfbuzz/harfbuzz/issues/new],
         [harfbuzz],
         [http://harfbuzz.org/])
diff --git a/src/hb-version.h b/src/hb-version.h
index 0c82d5b..13db8ce 100644
--- a/src/hb-version.h
+++ b/src/hb-version.h
@@ -38,9 +38,9 @@
 
 #define HB_VERSION_MAJOR 2
 #define HB_VERSION_MINOR 3
-#define HB_VERSION_MICRO 0
+#define HB_VERSION_MICRO 1
 
-#define HB_VERSION_STRING "2.3.0"
+#define HB_VERSION_STRING "2.3.1"
 
 #define HB_VERSION_ATLEAST(major,minor,micro) \
 	((major)*10000+(minor)*100+(micro) <= \