diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8801205ed..b502a1447 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Lotus changelog
 
-# 1.9.0-rc1 / 2021-04-27
+# 1.9.0-rc2 / 2021-04-27
 
 This is an optional Lotus release that introduces various improvements to the sealing, mining, and deal-making processes.
 
@@ -14,7 +14,7 @@ This is an optional Lotus release that introduces various improvements to the se
 - Local retrieval support (https://github.com/filecoin-project/lotus/pull/5917)
 - go-fil-markets v1.1.9 -> v1.2.5
   - For a detailed changelog see https://github.com/filecoin-project/go-fil-markets/blob/master/CHANGELOG.md
-- rust-fil-proofs v5.4.1 -> v6.1.0
+- rust-fil-proofs v5.4.1 -> v7
   - For a detailed changelog see https://github.com/filecoin-project/rust-fil-proofs/blob/master/CHANGELOG.md
 
 ## Changes
diff --git a/build/openrpc/full.json.gz b/build/openrpc/full.json.gz
index 2b96388a4..6cc950d73 100644
Binary files a/build/openrpc/full.json.gz and b/build/openrpc/full.json.gz differ
diff --git a/build/openrpc/miner.json.gz b/build/openrpc/miner.json.gz
index c9e6fdc75..90dd7ddf7 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 55f416dce..cd1e2683a 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 1e9bcba98..f0b09661b 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 = "1.9.0-rc1"
+const BuildVersion = "1.9.0-rc2"
 
 func UserVersion() string {
 	return BuildVersion + buildType() + CurrentCommit