diff --git a/CHANGELOG.md b/CHANGELOG.md
index 40d088195..8801205ed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Lotus changelog
 
-# 1.7.0-rc1 / 2021-04-13
+# 1.9.0-rc1 / 2021-04-27
 
 This is an optional Lotus release that introduces various improvements to the sealing, mining, and deal-making processes.
 
diff --git a/build/openrpc/full.json.gz b/build/openrpc/full.json.gz
index 6a0558f20..2b96388a4 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 99242d759..c9e6fdc75 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 59cdb4164..55f416dce 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 788f1b10f..1e9bcba98 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 = "1.7.0-rc1"
+const BuildVersion = "1.9.0-rc1"
 
 func UserVersion() string {
 	return BuildVersion + buildType() + CurrentCommit
diff --git a/chain/actors/policy/policy.go b/chain/actors/policy/policy.go
index 01c4b14d2..f210b8d94 100644
--- a/chain/actors/policy/policy.go
+++ b/chain/actors/policy/policy.go
@@ -30,9 +30,9 @@ import (
 )
 
 const (
-	ChainFinality          = miner4.ChainFinality
-	SealRandomnessLookback = ChainFinality
-	PaychSettleDelay       = paych4.SettleDelay
+	ChainFinality                  = miner4.ChainFinality
+	SealRandomnessLookback         = ChainFinality
+	PaychSettleDelay               = paych4.SettleDelay
 	MaxPreCommitRandomnessLookback = builtin4.EpochsInDay + SealRandomnessLookback
 )