diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a05b3d4f91..9000c8dd691 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,10 @@
 
 # UNRELEASED
 
+# Node and Miner v1.34.1 / 2025-09-15
+
+This is a non-critical patch release that fixes an issue with the Lotus `v1.34.0` release where the incorrect version of filecoin-ffi was included.  Lotus `v1.34.0` used filecoin-ffi `v1.34.0-dev` when it should have used `v1.34.0`.  This isn’t critical since it’s the same filecoin-ffi version used during the nv27 Calibration network upgrade, but for consistency with other Node implementations like Forest, we are creating this release.  This ensures the inclusion of ref-fvm `v4.7.3` update that was missing in v1.34.0.  All users of v1.34.0 are encouraged to upgrade to v1.34.1.
+
 # Node and Miner v1.34.0 / 2025-09-11
 
 This is a **MANDATORY Lotus v1.34.0 release**, which will deliver the Filecoin network version 27, codenamed “Golden Week” 🏮. This release candidate sets the upgrade epoch for the Mainnet network to **Epoch 5348280:  2025-09-24T23:00:00Z**.  (See the [local time for other timezones](https://www.worldtimebuddy.com/?qm=1&lid=100,5128581,5368361,1816670&h=100&date=2025-9-24&sln=23-24&hf=1&c=1196).)  
diff --git a/build/openrpc/full.json b/build/openrpc/full.json
index 995d791802d..ad0fcca5e0e 100644
--- a/build/openrpc/full.json
+++ b/build/openrpc/full.json
@@ -2,7 +2,7 @@
     "openrpc": "1.2.6",
     "info": {
         "title": "Lotus RPC API",
-        "version": "1.34.0"
+        "version": "1.34.1"
     },
     "methods": [
         {
diff --git a/build/openrpc/gateway.json b/build/openrpc/gateway.json
index 1c636775219..3048ca81155 100644
--- a/build/openrpc/gateway.json
+++ b/build/openrpc/gateway.json
@@ -2,7 +2,7 @@
     "openrpc": "1.2.6",
     "info": {
         "title": "Lotus RPC API",
-        "version": "1.34.0"
+        "version": "1.34.1"
     },
     "methods": [
         {
diff --git a/build/openrpc/miner.json b/build/openrpc/miner.json
index 1197401d28a..0812757ad64 100644
--- a/build/openrpc/miner.json
+++ b/build/openrpc/miner.json
@@ -2,7 +2,7 @@
     "openrpc": "1.2.6",
     "info": {
         "title": "Lotus RPC API",
-        "version": "1.34.0"
+        "version": "1.34.1"
     },
     "methods": [
         {
diff --git a/build/openrpc/v0/gateway.json b/build/openrpc/v0/gateway.json
index f2809d517ae..ee835608625 100644
--- a/build/openrpc/v0/gateway.json
+++ b/build/openrpc/v0/gateway.json
@@ -2,7 +2,7 @@
     "openrpc": "1.2.6",
     "info": {
         "title": "Lotus RPC API",
-        "version": "1.34.0"
+        "version": "1.34.1"
     },
     "methods": [
         {
diff --git a/build/openrpc/v2/full.json b/build/openrpc/v2/full.json
index 04f1f9f2daf..9f7792ea3a4 100644
--- a/build/openrpc/v2/full.json
+++ b/build/openrpc/v2/full.json
@@ -2,7 +2,7 @@
     "openrpc": "1.2.6",
     "info": {
         "title": "Lotus RPC API",
-        "version": "1.34.0"
+        "version": "1.34.1"
     },
     "methods": [
         {
diff --git a/build/openrpc/v2/gateway.json b/build/openrpc/v2/gateway.json
index 71e1d86da28..e99aef71260 100644
--- a/build/openrpc/v2/gateway.json
+++ b/build/openrpc/v2/gateway.json
@@ -2,7 +2,7 @@
     "openrpc": "1.2.6",
     "info": {
         "title": "Lotus RPC API",
-        "version": "1.34.0"
+        "version": "1.34.1"
     },
     "methods": [
         {
diff --git a/build/openrpc/worker.json b/build/openrpc/worker.json
index 6e9218cfa39..540a100008a 100644
--- a/build/openrpc/worker.json
+++ b/build/openrpc/worker.json
@@ -2,7 +2,7 @@
     "openrpc": "1.2.6",
     "info": {
         "title": "Lotus RPC API",
-        "version": "1.34.0"
+        "version": "1.34.1"
     },
     "methods": [
         {
diff --git a/build/version.go b/build/version.go
index 70f0452c97c..80da3a24a22 100644
--- a/build/version.go
+++ b/build/version.go
@@ -7,7 +7,7 @@ import (
 )
 
 // NodeBuildVersion is the local build version of the Lotus daemon
-const NodeBuildVersion string = "1.34.0"
+const NodeBuildVersion string = "1.34.1"
 
 func NodeUserVersion() BuildVersion {
 	if os.Getenv("LOTUS_VERSION_IGNORE_COMMIT") == "1" {
@@ -18,7 +18,7 @@ func NodeUserVersion() BuildVersion {
 }
 
 // MinerBuildVersion is the local build version of the Lotus miner
-const MinerBuildVersion = "1.34.0"
+const MinerBuildVersion = "1.34.1"
 
 func MinerUserVersion() BuildVersion {
 	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 5a16f55bc0e..b8b08371c68 100644
--- a/documentation/en/cli-lotus-miner.md
+++ b/documentation/en/cli-lotus-miner.md
@@ -8,7 +8,7 @@ USAGE:
    lotus-miner [global options] command [command options]
 
 VERSION:
-   1.34.0
+   1.34.1
 
 COMMANDS:
    init     Initialize a lotus miner repo
diff --git a/documentation/en/cli-lotus-worker.md b/documentation/en/cli-lotus-worker.md
index 160dad3082c..eee3a08ca96 100644
--- a/documentation/en/cli-lotus-worker.md
+++ b/documentation/en/cli-lotus-worker.md
@@ -8,7 +8,7 @@ USAGE:
    lotus-worker [global options] command [command options]
 
 VERSION:
-   1.34.0
+   1.34.1
 
 COMMANDS:
    run        Start lotus worker
diff --git a/documentation/en/cli-lotus.md b/documentation/en/cli-lotus.md
index 78399b81911..300903baa1d 100644
--- a/documentation/en/cli-lotus.md
+++ b/documentation/en/cli-lotus.md
@@ -8,7 +8,7 @@ USAGE:
    lotus [global options] command [command options]
 
 VERSION:
-   1.34.0
+   1.34.1
 
 COMMANDS:
    daemon   Start a lotus daemon process
diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index 44f5dc459be..586063e9cfa 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit 44f5dc459be3b74aec77138c4d3e976324b0d17b
+Subproject commit 586063e9cfa45147d554f176759520398715ba41