diff --git a/CHANGELOG.md b/CHANGELOG.md
index 407a7a1..d780e9b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # CHANGELOG
 
+## 1.0.0 - UNRELEASED
+### Breaking
+The project was transitioned to a [pure ESM package](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c). This follows along with the changed done in sitespeed.io and Browwsertim. This will make the project easier to maintain [#129](https://github.com/sitespeedio/chrome-har/pull/129).
+
+### Fixed
+* Removed dayjs dependency [#128](https://github.com/sitespeedio/chrome-har/pull/128).
+* Removed uuid dependency [#127](https://github.com/sitespeedio/chrome-har/pull/127).
+* Updated to tough cookie 5.0.0 [#126](https://github.com/sitespeedio/chrome-har/pull/126).
+
+
+
 ## 0.13.5 - 2024-07-12
 ### Fixed
 * Always take care of Network.responseReceivedExtraInfo even if its fired early, thank you [ifduyue](https://github.com/ifduyue) for PR [#120](https://github.com/sitespeedio/chrome-har/pull/120).