diff --git a/CHANGELOG.md b/CHANGELOG.md
index d413ef768..76f856f91 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 * [Unnecessary copy in print_to_string_internal](https://github.com/stepancheg/rust-protobuf/pull/684)
 * [Ignore error of `flush` in `Drop` of `CodedOutputStream`](https://github.com/stepancheg/rust-protobuf/issues/714)
+* [Faster `encoded_varint64_len`](https://github.com/stepancheg/rust-protobuf/pull/709)
 
 ## [3.3.0] - 2023-09-30