Add changelog and migrating entry

CosmWasm · Oct 17, 2023 · c55e126 · c55e126
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -12,8 +12,12 @@ and this project adheres to
   constructor, remove `SubMsgExecutionResponse` (Use `SubMsgResponse` instead)
   and remove `PartialEq<&str> for Addr` (validate the address and use
   `PartialEq<Addr> for Addr` instead). ([#1879])
+- cosmwasm-std: Remove `Mul<Decimal> for Uint128` and
+  `Mul<Decimal256> for Uint256`. Use `Uint{128,256}::mul_floor` instead.
+  ([#1890])
 
 [#1879]: https://github.com/CosmWasm/cosmwasm/pull/1879
+[#1890]: https://github.com/CosmWasm/cosmwasm/pull/1890
 
 ## [1.5.0-rc.0]
 

diff --git a/MIGRATING.md b/MIGRATING.md
@@ -54,6 +54,14 @@ major releases of `cosmwasm`. Note that you can also view the
 
   But keep in mind that this is case sensitive (while addresses are not).
 
+- Replace all uses of `Mul<Decimal> for Uint128` and
+  `Mul<Decimal256> for Uint256` with `Uint{128,256}::mul_floor`:
+
+  ```diff
+  -Uint128::new(123456) * Decimal::percent(1);
+  +Uint128::new(123456).mul_floor(Decimal::percent(1));
+  ```
+
 ## 1.4.x -> 1.5.0
 
 - Update `cosmwasm-*` dependencies in Cargo.toml (skip the ones you don't use):