diff --git a/CHANGELOG.md b/CHANGELOG.md
index 34d2bc539..7459a30bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,17 @@
 # Lotus changelog
 
+# v1.22.1 / 2023-04-23
+
+This is a MANDATORY hotfix release that fixes a consensus-critical bug -- the necessary fix is https://github.com/filecoin-project/ref-fvm/pull/1750
+
+You can NOT use 1.22.0 for the nv19 upgrade, you MUST be on 1.22.1 or higher.
+
+The only change is updating the FVM crates used via the FFI: https://github.com/filecoin-project/lotus/pull/10735.
+
 # v1.22.0 / 2023-04-21
 
+EDIT: Do NOT use this release for nv19, you MUST use v1.22.1 or higher.
+
 This is the stable release of Lotus v1.22.0 for the upcoming MANDATORY network upgrade at `2023-04-27T13:00:00Z`, epoch `2809800`. This release delivers the nv19 Lighting and nv20 Thunder network upgrade for mainnet.
 
 Note that you must be on a go version higher then Go 1.18.8, but lower then Go v1.20.0. We would recommend Go 1.19.7.
diff --git a/build/openrpc/full.json.gz b/build/openrpc/full.json.gz
index 581bec0dd..1dfe553d5 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 5f828bd01..25b198347 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 873f124e8..470a9c5a4 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 30964ae3d..3f73814cf 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 7cb555842..3db9ab4e1 100644
--- a/build/version.go
+++ b/build/version.go
@@ -37,7 +37,7 @@ func BuildTypeString() string {
 }
 
 // BuildVersion is the local build version
-const BuildVersion = "1.22.0"
+const BuildVersion = "1.22.1"
 
 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 a510378c6..460278e70 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:
-   1.22.0
+   1.22.1
 
 COMMANDS:
    init     Initialize a lotus miner repo
diff --git a/documentation/en/cli-lotus-worker.md b/documentation/en/cli-lotus-worker.md
index 4e87bd96a..ea4cff4e0 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:
-   1.22.0
+   1.22.1
 
 COMMANDS:
    run         Start lotus worker
diff --git a/documentation/en/cli-lotus.md b/documentation/en/cli-lotus.md
index b8b3d0deb..feb6e0f1b 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:
-   1.22.0
+   1.22.1
 
 COMMANDS:
    daemon   Start a lotus daemon process