diff --git a/CHANGELOG.md b/CHANGELOG.md
index f89bfa5ef7c1..ae165262e437 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -38,7 +38,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
-## v0.45.13 - 2023-02-06
+## v0.45.13 - 2023-02-09
 
 ### Improvements
 
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index c9aa12afcfad..3b367ba1e5d8 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,6 +1,13 @@
 # Cosmos SDK v0.45.13 Release Notes
 
-This release introduces one bug fix, namely [#14798](https://github.com/cosmos/cosmos-sdk/pull/14798) and a bump to Tendermint v0.34.25, as per its [security advisory](https://github.com/informalsystems/tendermint/security/advisories/GHSA-cpqw-5g6w-h8rr).
+This release introduces one bug fix, namely [#14798](https://github.com/cosmos/cosmos-sdk/pull/14798) and a bump to Tendermint v0.34.26, as per its [security advisory](https://github.com/informalsystems/tendermint/security/advisories/GHSA-cpqw-5g6w-h8rr).
+
+**NOTE**: Add or update the following replace in the `go.mod` of your application:
+
+```go
+// use informal system fork of tendermint
+replace github.com/tendermint/tendermint => github.com/informalsystems/tendermint v0.34.26
+```
 
 Please see the [CHANGELOG](https://github.com/cosmos/cosmos-sdk/blob/release/v0.45.x/CHANGELOG.md) for an exhaustive list of changes.