diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 218393f..4cff5b9 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.1"
+  ".": "0.4.2"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4a7c6a..e3d6e3b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## [0.4.2](https://github.com/forkwright/akroasis/compare/v0.4.1...v0.4.2) (2026-08-21)
+
+
+### Bug Fixes
+
+* **kerykeion:** accept only the PSK shapes the protocol defines ([#436](https://github.com/forkwright/akroasis/issues/436)) ([c04d9a2](https://github.com/forkwright/akroasis/commit/c04d9a27854c4fb3c5ce713acc009d023a4bd8af))
+* **kerykeion:** bound the outbound pending queue ([#438](https://github.com/forkwright/akroasis/issues/438)) ([35a5d74](https://github.com/forkwright/akroasis/commit/35a5d744a768dfab90ff94d2ec1e9d865b3c4a13))
+* **kerykeion:** bound the wire fields that were trusted to bound themselves ([#435](https://github.com/forkwright/akroasis/issues/435)) ([e7b4f45](https://github.com/forkwright/akroasis/commit/e7b4f451a68159b5ce0dbc5741c15d89e8086c7e))
+* **kerykeion:** bound what a peer can accumulate during the handshake ([#437](https://github.com/forkwright/akroasis/issues/437)) ([04c22d7](https://github.com/forkwright/akroasis/commit/04c22d74a0500c5e09c45543cbcd420edf24fdc3))
+* **kryphos:** derive the vault key from the parameters the vault recorded ([#434](https://github.com/forkwright/akroasis/issues/434)) ([203d75f](https://github.com/forkwright/akroasis/commit/203d75f64f2a9f8b6f55dfa1f9e5f9db32fd7c5d)), closes [#231](https://github.com/forkwright/akroasis/issues/231)
+* **kryphos:** reject a bad vault salt instead of panicking on it ([#432](https://github.com/forkwright/akroasis/issues/432)) ([486c78f](https://github.com/forkwright/akroasis/commit/486c78ffccf26a5d8b5044a3f46aaea5a89127ed))
+* **kryphos:** report what actually failed, not the nearest familiar error ([#439](https://github.com/forkwright/akroasis/issues/439)) ([de44d50](https://github.com/forkwright/akroasis/commit/de44d50e662afdb8ee20fa5aa5b1110b8f72ade7))
+* **semaino:** make the signal path lossless end to end ([#429](https://github.com/forkwright/akroasis/issues/429)) ([f6249d5](https://github.com/forkwright/akroasis/commit/f6249d5e91db0708a03cb49cc6e51925053588ba)), closes [#232](https://github.com/forkwright/akroasis/issues/232)
+* **syntonia:** neutralize spreadsheet formulas in exported channel names ([#433](https://github.com/forkwright/akroasis/issues/433)) ([41a41d6](https://github.com/forkwright/akroasis/commit/41a41d6d2a2cd69e704d9a066ae175a3480c5003))
+
 ## [0.4.1](https://github.com/forkwright/akroasis/compare/v0.4.0...v0.4.1) (2026-08-21)
 
 
diff --git a/Cargo.lock b/Cargo.lock
index 66aa942..6ba3091 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -34,7 +34,7 @@ dependencies = [
 
 [[package]]
 name = "akroasis"
-version = "0.4.1"
+version = "0.4.2"
 dependencies = [
  "clap",
  "comfy-table",
@@ -61,7 +61,7 @@ dependencies = [
 
 [[package]]
 name = "akroasis-server"
-version = "0.4.1"
+version = "0.4.2"
 dependencies = [
  "akroasis",
  "axum",
@@ -1394,7 +1394,7 @@ dependencies = [
 
 [[package]]
 name = "kerykeion"
-version = "0.4.1"
+version = "0.4.2"
 dependencies = [
  "aes",
  "bytes",
@@ -1419,7 +1419,7 @@ dependencies = [
 
 [[package]]
 name = "koinon"
-version = "0.4.1"
+version = "0.4.2"
 dependencies = [
  "blake3",
  "ciborium",
@@ -1440,7 +1440,7 @@ dependencies = [
 
 [[package]]
 name = "kryphos"
-version = "0.4.1"
+version = "0.4.2"
 dependencies = [
  "argon2",
  "blake3",
@@ -2166,7 +2166,7 @@ checksum = "b12e76d157a900eb52e81bc6e9f3069344290341720e9178cde2407113ac8d89"
 
 [[package]]
 name = "semaino"
-version = "0.4.1"
+version = "0.4.2"
 dependencies = [
  "jiff",
  "koinon",
@@ -2459,7 +2459,7 @@ checksum = "0bf256ce5efdfa370213c1dabab5935a12e49f2c58d15e9eac2870d3b4f27263"
 
 [[package]]
 name = "syntonia"
-version = "0.4.1"
+version = "0.4.2"
 dependencies = [
  "compact_str",
  "csv",
diff --git a/Cargo.toml b/Cargo.toml
index d7fa216..1e13d2b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ resolver = "2"
 members = ["crates/*"]
 
 [workspace.package]
-version = "0.4.1"
+version = "0.4.2"
 edition = "2024"
 rust-version = "1.85"
 license = "AGPL-3.0-only"