diff --git a/ChangeLog b/ChangeLog
index 30f0fa4..e1ba6f7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+Release 1.6.3
+-------------
+
+ . Fixed an underflow error when using flat_xor_hd.
+ . Added a build option to allow a suffix to be added to library names passed
+   to dlopen(). To use, define LIBERASURECODE_SO_SUFFIX via CFLAGS when
+   building. This is useful when renaming libraries for PyEClib wheels, for
+   example, so they don't conflict with system packages that may be installed.
+
 Release 1.6.2
 -------------
 
@@ -94,7 +103,7 @@ Release 1.0.9
 
  . Minor bugfixes including removing offending MAJOR/MINOR version macros
  . Enforce upper limit 32 on the number of erasure coding fragments
-   (#data + #chunks) < 32 
+   (#data + #chunks) < 32
 
  Release 1.0.8
 -------------
diff --git a/include/erasurecode/erasurecode_version.h b/include/erasurecode/erasurecode_version.h
index c3f4147..5f06cd7 100644
--- a/include/erasurecode/erasurecode_version.h
+++ b/include/erasurecode/erasurecode_version.h
@@ -27,7 +27,7 @@
 
 #define _MAJOR 1
 #define _MINOR 6
-#define _REV 2
+#define _REV 3
 #define _VERSION(x, y, z) ((x << 16) | (y << 8) | (z))
 
 #define LIBERASURECODE_VERSION _VERSION(_MAJOR, _MINOR, _REV)