diff --git a/CHANGELOG.md b/CHANGELOG.md
index c23efba..64e274d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## [1.6.3]
+
+### Fixed
+ -  mark __dump_buffer as debug-only
+ -  cast fwsts_num to off_t to suppress warning
+
 ## [1.6.2]
 
 ### Changed
diff --git a/VERSION b/VERSION
index fdd3be6..266146b 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.6.2
+1.6.3