diff --git a/CHANGELOG.md b/CHANGELOG.md
index a107f40e8..902408eac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,10 @@
 # Lotus changelog
 
-# v1.24.0-rc1 / 2023-10-12
+# v1.24.0-rc2 / 2023-10-17
 
-This is the first release candidate of the upcoming **MANDATORY Lotus v1.24.0** release, which will deliver the Filecoin network version 21, codenamed Watermelon 🍉.
+This is the second release candidate of the upcoming **MANDATORY Lotus v1.24.0** release, which will deliver the Filecoin network version 21, codenamed Watermelon 🍉.
 
-**This release candidate does NOT set an upgrade epoch for mainnet, but sets the calibration network to upgrade at epoch 1013134, which is 2023-10-19T13:00:00Z.**
+**This release candidate does NOT set an upgrade epoch for mainnet, but sets the calibration network to upgrade at epoch 1013134, which is 2023-10-19T13:00:00Z.** This second release candidate updates go-state-types to v0.12.5, adding a proofs mapping that was missing v0.12.5. Lotus v1.24.0-RC1 remains valid for the network upgrade in the Calibration network. However, storage providers intending to conduct Synthetic PoRep testing are advised to use RC2.
 
 The Filecoin network version 21 delivers the following FIPs:
 
diff --git a/build/openrpc/full.json.gz b/build/openrpc/full.json.gz
index 19d3a21e7..1a52c3737 100644
Binary files a/build/openrpc/full.json.gz and b/build/openrpc/full.json.gz differ
diff --git a/build/openrpc/gateway.json.gz b/build/openrpc/gateway.json.gz
index 7a92c8740..9dbbb8b18 100644
Binary files a/build/openrpc/gateway.json.gz and b/build/openrpc/gateway.json.gz differ
diff --git a/build/openrpc/miner.json.gz b/build/openrpc/miner.json.gz
index fb1df5708..d343f039c 100644
Binary files a/build/openrpc/miner.json.gz and b/build/openrpc/miner.json.gz differ
diff --git a/build/openrpc/worker.json.gz b/build/openrpc/worker.json.gz
index 871599cd8..0a5a35284 100644
Binary files a/build/openrpc/worker.json.gz and b/build/openrpc/worker.json.gz differ
diff --git a/build/version.go b/build/version.go
index 4aa47e6f9..a09472beb 100644
--- a/build/version.go
+++ b/build/version.go
@@ -37,7 +37,7 @@ func BuildTypeString() string {
 }
 
 // BuildVersion is the local build version
-const BuildVersion = "1.24.0-rc1"
+const BuildVersion = "1.24.0-rc2"
 
 func UserVersion() string {
 	if os.Getenv("LOTUS_VERSION_IGNORE_COMMIT") == "1" {
diff --git a/documentation/en/cli-lotus-miner.md b/documentation/en/cli-lotus-miner.md
index dbd2a8970..ec09eea49 100644
--- a/documentation/en/cli-lotus-miner.md
+++ b/documentation/en/cli-lotus-miner.md
@@ -7,7 +7,7 @@ USAGE:
    lotus-miner [global options] command [command options] [arguments...]
 
 VERSION:
-   1.24.0-rc1
+   1.24.0-rc2
 
 COMMANDS:
    init     Initialize a lotus miner repo
diff --git a/documentation/en/cli-lotus-worker.md b/documentation/en/cli-lotus-worker.md
index 91c21109b..d9b1e5f49 100644
--- a/documentation/en/cli-lotus-worker.md
+++ b/documentation/en/cli-lotus-worker.md
@@ -7,7 +7,7 @@ USAGE:
    lotus-worker [global options] command [command options] [arguments...]
 
 VERSION:
-   1.24.0-rc1
+   1.24.0-rc2
 
 COMMANDS:
    run        Start lotus worker
diff --git a/documentation/en/cli-lotus.md b/documentation/en/cli-lotus.md
index 11207de77..5515e78b7 100644
--- a/documentation/en/cli-lotus.md
+++ b/documentation/en/cli-lotus.md
@@ -7,7 +7,7 @@ USAGE:
    lotus [global options] command [command options] [arguments...]
 
 VERSION:
-   1.24.0-rc1
+   1.24.0-rc2
 
 COMMANDS:
    daemon   Start a lotus daemon process