diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9acf8be..96d3795 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [5.1.0](https://www.github.com/image-js/iobuffer/compare/v5.0.4...v5.1.0) (2021-12-17)
+
+
+### Features
+
+* add int64 support ([3a306c0](https://www.github.com/image-js/iobuffer/commit/3a306c0d3fb62f88be7ad59ea1d202a623907426))
+
 ### [5.0.4](https://www.github.com/image-js/iobuffer/compare/v5.0.3...v5.0.4) (2021-10-12)
 
 
diff --git a/package.json b/package.json
index 53fedb7..4227d03 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "iobuffer",
-  "version": "5.0.4",
+  "version": "5.1.0",
   "description": "Read and write binary data on ArrayBuffers",
   "main": "./lib/IOBuffer.js",
   "module": "./lib-esm/IOBuffer.js",