diff --git a/substrate/frame/contracts/CHANGELOG.md b/substrate/frame/contracts/CHANGELOG.md
index 80615aaec8..2a93c838bc 100644
--- a/substrate/frame/contracts/CHANGELOG.md
+++ b/substrate/frame/contracts/CHANGELOG.md
@@ -20,20 +20,24 @@ In other words: Upgrading this pallet will not break pre-existing contracts.
 
 ### Added
 
-- Replaced `seal_println` with `seal_debug_message` which allows output to an RPC client.
-[1](https://github.com/paritytech/substrate/pull/8773)
+- New **unstable** `seal_rent_params` and `seal_rent_status` contract callable function.
+[#8231](https://github.com/paritytech/substrate/pull/8231)
+[#8780](https://github.com/paritytech/substrate/pull/8780)
 
-- Add new `instantiate` RPC that allows clients to dry-run contract instantiation.
-[1](https://github.com/paritytech/substrate/pull/8451)
+- New `instantiate` RPC that allows clients to dry-run contract instantiation.
+[#8451](https://github.com/paritytech/substrate/pull/8451)
+
+- New version of `seal_random` which exposes additional information.
+[#8329](https://github.com/paritytech/substrate/pull/8329)
+
+### Changed
+
+- Replaced `seal_println` with the **unstable** `seal_debug_message` API which allows
+output to an RPC client.
+[#8773](https://github.com/paritytech/substrate/pull/8773)
 
 - Make storage and fields of `Schedule` private to the crate.
-[1](https://github.com/paritytech/substrate/pull/8359)
-
-- Add new version of `seal_random` which exposes additional information.
-[1](https://github.com/paritytech/substrate/pull/8329)
-
-- Add `seal_rent_params` contract callable function.
-[1](https://github.com/paritytech/substrate/pull/8231)
+[#8359](https://github.com/paritytech/substrate/pull/8359)
 
 ## [v3.0.0] 2021-02-25
 
@@ -42,56 +46,56 @@ This version constitutes the first release that brings any stability guarantees
 ### Added
 
 - Emit an event when a contract terminates (self-destructs).
-[1](https://github.com/paritytech/substrate/pull/8014)
+[#8014](https://github.com/paritytech/substrate/pull/8014)
 
 - Charge rent for code stored on the chain in addition to the already existing
 rent that is payed for data storage.
-[1](https://github.com/paritytech/substrate/pull/7935)
+[#7935](https://github.com/paritytech/substrate/pull/7935)
 
 - Allow the runtime to configure per storage item costs in addition
 to the already existing per byte costs.
-[1](https://github.com/paritytech/substrate/pull/7819)
+[#7819](https://github.com/paritytech/substrate/pull/7819)
 
 - Contracts are now deleted lazily so that the user who removes a contract
 does not need to pay for the deletion of the contract storage.
-[1](https://github.com/paritytech/substrate/pull/7740)
+[#7740](https://github.com/paritytech/substrate/pull/7740)
 
 - Allow runtime authors to define chain extensions in order to provide custom
 functionality to contracts.
-[1](https://github.com/paritytech/substrate/pull/7548)
-[2](https://github.com/paritytech/substrate/pull/8003)
+[#7548](https://github.com/paritytech/substrate/pull/7548)
+[#8003](https://github.com/paritytech/substrate/pull/8003)
 
 - Proper weights which are fully automated by benchmarking.
-[1](https://github.com/paritytech/substrate/pull/6715)
-[2](https://github.com/paritytech/substrate/pull/7017)
-[3](https://github.com/paritytech/substrate/pull/7361)
+[#6715](https://github.com/paritytech/substrate/pull/6715)
+[#7017](https://github.com/paritytech/substrate/pull/7017)
+[#7361](https://github.com/paritytech/substrate/pull/7361)
 
-### Changes
+### Changed
 
 - Collect the rent for one block during instantiation.
-[1](https://github.com/paritytech/substrate/pull/7847)
+[#7847](https://github.com/paritytech/substrate/pull/7847)
 
 - Instantiation takes a `salt` argument to allow for easier instantion of the
 same code by the same sender.
-[1](https://github.com/paritytech/substrate/pull/7482)
+[#7482](https://github.com/paritytech/substrate/pull/7482)
 
 - Improve the information returned by the `contracts_call` RPC.
-[1](https://github.com/paritytech/substrate/pull/7468)
+[#7468](https://github.com/paritytech/substrate/pull/7468)
 
 - Simplify the node configuration necessary to add this module.
-[1](https://github.com/paritytech/substrate/pull/7409)
+[#7409](https://github.com/paritytech/substrate/pull/7409)
 
 ### Fixed
 
 - Consider the code size of a contract in the weight that is charged for
 loading a contract from storage.
-[1](https://github.com/paritytech/substrate/pull/8086)
+[#8086](https://github.com/paritytech/substrate/pull/8086)
 
 - Fix possible overflow in storage size calculation
-[1](https://github.com/paritytech/substrate/pull/7885)
+[#7885](https://github.com/paritytech/substrate/pull/7885)
 
 - Cap the surcharge reward that can be claimed.
-[1](https://github.com/paritytech/substrate/pull/7870)
+[#7870](https://github.com/paritytech/substrate/pull/7870)
 
 - Fix a possible DoS vector where contracts could allocate too large buffers.
-[1](https://github.com/paritytech/substrate/pull/7818)
+[#7818](https://github.com/paritytech/substrate/pull/7818)