diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd14f8622..7f87f06e1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,37 @@
 # Lotus changelog
 
+# 1.2.3 / 2020-12-15
+
+This is an optional Lotus release that introduces many performance improvements, bugfixes, and UX improvements.
+
+## Changes
+
+- When waiting for deal commit messages, ignore unsuccessful messages (https://github.com/filecoin-project/lotus/pull/5189)
+- Bigger copy buffer size for stores (https://github.com/filecoin-project/lotus/pull/5177)
+- Print MinPieceSize when querying ask (https://github.com/filecoin-project/lotus/pull/5178)
+- Optimize miner info & sectors list loading (https://github.com/filecoin-project/lotus/pull/5176)
+- Allow miners to filter (un)verified deals (https://github.com/filecoin-project/lotus/pull/5094)
+- Fix curSealing out of MaxSealingSectors limit (https://github.com/filecoin-project/lotus/pull/5166)
+- Add mpool pending from / to filter (https://github.com/filecoin-project/lotus/pull/5169)
+- Add metrics for delayed blocks (https://github.com/filecoin-project/lotus/pull/5171)
+- Fix PushUntrusted publishing -- the message is local (https://github.com/filecoin-project/lotus/pull/5173)
+- Avoid potential hang in events API when starting event listener (https://github.com/filecoin-project/lotus/pull/5159)
+- Show data transfer ID in list-deals (https://github.com/filecoin-project/lotus/pull/5150)
+- Fix events API mutex locking (https://github.com/filecoin-project/lotus/pull/5160)
+- Message pool refactors (https://github.com/filecoin-project/lotus/pull/5162)
+- Fix lotus-shed cid output (https://github.com/filecoin-project/lotus/pull/5072)
+- Use FundManager to withdraw funds, add MarketWithdraw API (https://github.com/filecoin-project/lotus/pull/5112)
+- Add keygen outfile (https://github.com/filecoin-project/lotus/pull/5118)
+- Update sr2 stat aggregation (https://github.com/filecoin-project/lotus/pull/5114)
+- Fix miner control address lookup (https://github.com/filecoin-project/lotus/pull/5119)
+- Fix send with declared nonce 0 (https://github.com/filecoin-project/lotus/pull/5111)
+- Introduce memory watchdog; LOTUS_MAX_HEAP (https://github.com/filecoin-project/lotus/pull/5101)
+- Miner control address config for (pre)commits (https://github.com/filecoin-project/lotus/pull/5103)
+- Delete repeated call func (https://github.com/filecoin-project/lotus/pull/5099)
+- lotus-shed ledger show command (https://github.com/filecoin-project/lotus/pull/5098)
+- Log a message when there aren't enough peers for sync (https://github.com/filecoin-project/lotus/pull/5105)
+- Miner code cleanup (https://github.com/filecoin-project/lotus/pull/5107)
+
 # 1.2.2 / 2020-12-03
 
 This is an optional Lotus release that introduces various improvements to the mining logic and deal-making workflow, as well as several new UX features.
diff --git a/build/version.go b/build/version.go
index 895d92a49..ce180f33f 100644
--- a/build/version.go
+++ b/build/version.go
@@ -29,7 +29,7 @@ func buildType() string {
 }
 
 // BuildVersion is the local build version, set by build system
-const BuildVersion = "1.2.2"
+const BuildVersion = "1.2.3"
 
 func UserVersion() string {
 	return BuildVersion + buildType() + CurrentCommit