diff --git a/Cargo.lock b/Cargo.lock
index 797f1118f..7fb20aa66 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -725,7 +725,7 @@ dependencies = [
  "cid 0.10.1",
  "fvm_ipld_bitfield 0.6.0",
  "fvm_ipld_encoding 0.4.0",
- "fvm_shared 4.3.0",
+ "fvm_shared 4.3.1",
  "libfuzzer-sys",
  "multihash 0.18.1",
  "rand",
@@ -1748,8 +1748,8 @@ name = "fil_address_actor"
 version = "0.1.0"
 dependencies = [
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
 ]
 
 [[package]]
@@ -1785,8 +1785,8 @@ name = "fil_create_actor"
 version = "0.1.0"
 dependencies = [
  "fil_actors_runtime",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
 ]
 
 [[package]]
@@ -1795,8 +1795,8 @@ version = "0.1.0"
 dependencies = [
  "cid 0.10.1",
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "num-traits",
  "serde",
  "serde_tuple",
@@ -1807,8 +1807,8 @@ name = "fil_events_actor"
 version = "0.1.0"
 dependencies = [
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "serde",
  "serde_tuple",
 ]
@@ -1818,8 +1818,8 @@ name = "fil_exit_data_actor"
 version = "0.1.0"
 dependencies = [
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
 ]
 
 [[package]]
@@ -1830,8 +1830,8 @@ dependencies = [
  "cid 0.10.1",
  "fvm_gas_calibration_shared",
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "libipld",
  "num-derive 0.4.1",
  "num-traits",
@@ -1843,8 +1843,8 @@ name = "fil_gaslimit_actor"
 version = "0.1.0"
 dependencies = [
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "log",
  "serde",
  "serde_tuple",
@@ -1854,8 +1854,8 @@ dependencies = [
 name = "fil_hello_world_actor"
 version = "0.1.0"
 dependencies = [
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
 ]
 
 [[package]]
@@ -1866,8 +1866,8 @@ dependencies = [
  "cid 0.10.1",
  "fvm_ipld_blockstore 0.2.1",
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "serde",
  "serde_tuple",
 ]
@@ -1877,8 +1877,8 @@ name = "fil_ipld_actor"
 version = "0.1.0"
 dependencies = [
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "minicov",
 ]
 
@@ -1886,16 +1886,16 @@ dependencies = [
 name = "fil_malformed_syscall_actor"
 version = "0.1.0"
 dependencies = [
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
 ]
 
 [[package]]
 name = "fil_oom_actor"
 version = "0.1.0"
 dependencies = [
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
 ]
 
 [[package]]
@@ -1904,8 +1904,8 @@ version = "0.1.0"
 dependencies = [
  "cid 0.10.1",
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
 ]
 
 [[package]]
@@ -1914,16 +1914,16 @@ version = "0.1.0"
 dependencies = [
  "cid 0.10.1",
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
 ]
 
 [[package]]
 name = "fil_stack_overflow_actor"
 version = "0.1.0"
 dependencies = [
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
 ]
 
 [[package]]
@@ -1932,8 +1932,8 @@ version = "0.1.0"
 dependencies = [
  "fil_actors_runtime",
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "minicov",
  "multihash 0.18.1",
 ]
@@ -1944,8 +1944,8 @@ version = "0.1.0"
 dependencies = [
  "cid 0.10.1",
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "serde",
  "serde_tuple",
 ]
@@ -1956,8 +1956,8 @@ version = "0.1.0"
 dependencies = [
  "cid 0.10.1",
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "serde",
  "serde_tuple",
 ]
@@ -2285,7 +2285,7 @@ dependencies = [
 
 [[package]]
 name = "fvm"
-version = "4.3.0"
+version = "4.3.1"
 dependencies = [
  "ambassador",
  "anyhow",
@@ -2300,7 +2300,7 @@ dependencies = [
  "fvm_ipld_blockstore 0.2.1",
  "fvm_ipld_encoding 0.4.0",
  "fvm_ipld_hamt 0.9.0",
- "fvm_shared 4.3.0",
+ "fvm_shared 4.3.1",
  "lazy_static",
  "log",
  "minstant",
@@ -2331,7 +2331,7 @@ dependencies = [
  "fvm",
  "fvm_integration_tests",
  "fvm_ipld_encoding 0.4.0",
- "fvm_shared 4.3.0",
+ "fvm_shared 4.3.1",
  "hex",
 ]
 
@@ -2384,7 +2384,7 @@ dependencies = [
  "fvm_ipld_blockstore 0.2.1",
  "fvm_ipld_car 0.7.1",
  "fvm_ipld_encoding 0.4.0",
- "fvm_shared 4.3.0",
+ "fvm_shared 4.3.1",
  "itertools 0.11.0",
  "ittapi-rs",
  "lazy_static",
@@ -2405,7 +2405,7 @@ dependencies = [
 name = "fvm_gas_calibration_shared"
 version = "0.1.0"
 dependencies = [
- "fvm_shared 4.3.0",
+ "fvm_shared 4.3.1",
  "num-derive 0.4.1",
  "num-traits",
  "serde",
@@ -2414,7 +2414,7 @@ dependencies = [
 
 [[package]]
 name = "fvm_integration_tests"
-version = "4.3.0"
+version = "4.3.1"
 dependencies = [
  "ambassador",
  "anyhow",
@@ -2428,8 +2428,8 @@ dependencies = [
  "fvm_ipld_blockstore 0.2.1",
  "fvm_ipld_car 0.7.1",
  "fvm_ipld_encoding 0.4.0",
- "fvm_sdk 4.3.0",
- "fvm_shared 4.3.0",
+ "fvm_sdk 4.3.1",
+ "fvm_shared 4.3.1",
  "fvm_test_actors",
  "hex",
  "lazy_static",
@@ -2692,11 +2692,11 @@ dependencies = [
 
 [[package]]
 name = "fvm_sdk"
-version = "4.3.0"
+version = "4.3.1"
 dependencies = [
  "cid 0.10.1",
  "fvm_ipld_encoding 0.4.0",
- "fvm_shared 4.3.0",
+ "fvm_shared 4.3.1",
  "lazy_static",
  "log",
  "num-traits",
@@ -2730,7 +2730,7 @@ dependencies = [
 
 [[package]]
 name = "fvm_shared"
-version = "4.3.0"
+version = "4.3.1"
 dependencies = [
  "anyhow",
  "arbitrary",
@@ -2743,7 +2743,7 @@ dependencies = [
  "data-encoding-macro",
  "filecoin-proofs-api",
  "fvm_ipld_encoding 0.4.0",
- "fvm_shared 4.3.0",
+ "fvm_shared 4.3.1",
  "lazy_static",
  "libsecp256k1",
  "multihash 0.18.1",
diff --git a/Cargo.toml b/Cargo.toml
index e7788742e..7101d4168 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ members = [
 ]
 
 [workspace.package]
-version = "4.3.0"
+version = "4.3.1"
 license = "MIT OR Apache-2.0"
 edition = "2021"
 repository = "https://github.com/filecoin-project/ref-fvm"
@@ -74,9 +74,9 @@ minstant = "0.1.3"
 coverage-helper = "0.2.0"
 
 # workspace
-fvm = { path = "fvm", version = "~4.3.0", default-features = false }
-fvm_shared = { path = "shared", version = "~4.3.0", default-features = false }
-fvm_sdk = { path = "sdk", version = "~4.3.0" }
+fvm = { path = "fvm", version = "~4.3.1", default-features = false }
+fvm_shared = { path = "shared", version = "~4.3.1", default-features = false }
+fvm_sdk = { path = "sdk", version = "~4.3.1" }
 fvm_ipld_amt = { path = "ipld/amt", version = "0.6.2" }
 fvm_ipld_hamt = { path = "ipld/hamt", version = "0.9.0" }
 fvm_ipld_kamt = { path = "ipld/kamt", version = "0.3.0" }
@@ -84,7 +84,7 @@ fvm_ipld_car = { path = "ipld/car", version = "0.7.1" }
 fvm_ipld_blockstore = { path = "ipld/blockstore", version = "0.2.1" }
 fvm_ipld_bitfield = { path = "ipld/bitfield", version = "0.6.0" }
 fvm_ipld_encoding = { path = "ipld/encoding", version = "0.4.0" }
-fvm_integration_tests = { path = "testing/integration", version = "~4.3.0" }
+fvm_integration_tests = { path = "testing/integration", version = "~4.3.1" }
 fvm_gas_calibration_shared = { path = "testing/calibration/shared" }
 fvm_test_actors = { path = "testing/test_actors" }
 
diff --git a/fvm/CHANGELOG.md b/fvm/CHANGELOG.md
index 3dcdb22c3..a4ff1659d 100644
--- a/fvm/CHANGELOG.md
+++ b/fvm/CHANGELOG.md
@@ -4,6 +4,8 @@ Changes to the reference FVM implementation.
 
 ## [Unreleased]
 
+## 4.3.1 [2023-06-26]
+
 - **BREAKING**: Simplify the verify-signtures feature and update ambassador. This is a minor-breaking change because the ambassador macros are now only exported from the prelude/kernel module, not the crate root as they previously were.
 - chore: remove the `nv23-dev` feature flag [#2022](https://github.com/filecoin-project/ref-fvm/pull/2022)
 - chore: update wasmtime to 19.0.2
diff --git a/sdk/CHANGELOG.md b/sdk/CHANGELOG.md
index 714c7bf33..b0aad2d6b 100644
--- a/sdk/CHANGELOG.md
+++ b/sdk/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+## 4.3.1 [2023-06-26]
+
 - chore: remove the `nv23-dev` feature flag [#2022](https://github.com/filecoin-project/ref-fvm/pull/2022)
 
 ## 4.3.0 [2023-06-12]
diff --git a/shared/CHANGELOG.md b/shared/CHANGELOG.md
index eaa1757c5..2ec2f3896 100644
--- a/shared/CHANGELOG.md
+++ b/shared/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+## 4.3.1 [2023-06-26]
+
 - chore: remove the `nv23-dev` feature flag [#2022](https://github.com/filecoin-project/ref-fvm/pull/2022)
 
 ## 4.3.0 [2023-06-12]