diff --git a/Cargo.toml b/Cargo.toml
index 21918ee8e6031..e62a4949b9f6a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -425,7 +425,7 @@ tokio-postgres = { git = "https://github.com/madsim-rs/rust-postgres.git", rev =
 # sqlx version: v0.8.2
 # patch diffs: https://github.com/madsim-rs/sqlx/pull/4
 sqlx = { git = "https://github.com/madsim-rs/sqlx.git", rev = "3efe6d0065963db2a2b7f30dee69f647e28dec81" }
-# patch to remove preserve_order from serde_json
+# patch to remove preserve_order from serde_json for order-agnostic cmp as PG
 bson = { git = "https://github.com/risingwavelabs/bson-rust", tag = "v2.15.0-json-no-preserve_order" }
 
 # patch to make zstd version compatible: