diff --git a/Cargo.lock b/Cargo.lock
index 01b5fb9..cc7be51 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 4
 
 [[package]]
 name = "asterisk-rs"
-version = "0.1.7"
+version = "0.6.0"
 dependencies = [
  "asterisk-rs-agi",
  "asterisk-rs-ami",
@@ -18,7 +18,7 @@ dependencies = [
 
 [[package]]
 name = "asterisk-rs-agi"
-version = "0.2.2"
+version = "0.6.0"
 dependencies = [
  "asterisk-rs-core",
  "bytes",
@@ -30,7 +30,7 @@ dependencies = [
 
 [[package]]
 name = "asterisk-rs-ami"
-version = "0.5.0"
+version = "0.6.0"
 dependencies = [
  "asterisk-rs-core",
  "bytes",
@@ -47,7 +47,7 @@ dependencies = [
 
 [[package]]
 name = "asterisk-rs-ari"
-version = "0.4.1"
+version = "0.6.0"
 dependencies = [
  "asterisk-rs-core",
  "base64",
@@ -65,7 +65,7 @@ dependencies = [
 
 [[package]]
 name = "asterisk-rs-core"
-version = "0.3.0"
+version = "0.6.0"
 dependencies = [
  "pin-project-lite",
  "serde",
@@ -529,9 +529,9 @@ checksum = "d98f6fed1fde3f8c21bc40a1abb88dd75e67924f9cffc3ef95607bad8017f8e2"
 
 [[package]]
 name = "iri-string"
-version = "0.7.10"
+version = "0.7.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c91338f0783edbd6195decb37bae672fd3b165faffb89bf7b9e6942f8b1a731a"
+checksum = "d8e7418f59cc01c88316161279a7f665217ae316b388e58a0d10e29f54f1e5eb"
 dependencies = [
  "memchr",
  "serde",
diff --git a/crates/asterisk-rs-agi/CHANGELOG.md b/crates/asterisk-rs-agi/CHANGELOG.md
index 094d825..46f1beb 100644
--- a/crates/asterisk-rs-agi/CHANGELOG.md
+++ b/crates/asterisk-rs-agi/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- harden credential handling, codec safety, and API consistency
+
+
 ## [0.2.1](https://github.com/deadcode-walker/asterisk-rs/compare/asterisk-rs-agi-v0.2.0...asterisk-rs-agi-v0.2.1) - 2026-03-18
 
 ### Other
diff --git a/crates/asterisk-rs-agi/Cargo.toml b/crates/asterisk-rs-agi/Cargo.toml
index 1d1fc77..f08de76 100644
--- a/crates/asterisk-rs-agi/Cargo.toml
+++ b/crates/asterisk-rs-agi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "asterisk-rs-agi"
-version = "0.2.2"
+version = "0.6.0"
 description = "Async Rust FastAGI server for Asterisk Gateway Interface"
 edition.workspace = true
 rust-version.workspace = true
@@ -14,7 +14,7 @@ readme = "README.md"
 workspace = true
 
 [dependencies]
-asterisk-rs-core = { path = "../asterisk-rs-core", version = "0.3.0" }
+asterisk-rs-core = { path = "../asterisk-rs-core", version = "0.6.0" }
 tokio = { workspace = true, features = ["net", "sync", "time", "io-util", "macros", "rt"] }
 tracing.workspace = true
 thiserror.workspace = true
diff --git a/crates/asterisk-rs-ami/CHANGELOG.md b/crates/asterisk-rs-ami/CHANGELOG.md
index 1e7ec07..6171bc6 100644
--- a/crates/asterisk-rs-ami/CHANGELOG.md
+++ b/crates/asterisk-rs-ami/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- harden credential handling, codec safety, and API consistency
+
+
 ## [0.4.0](https://github.com/deadcode-walker/asterisk-rs/compare/asterisk-rs-ami-v0.3.0...asterisk-rs-ami-v0.4.0) - 2026-03-18
 
 ### Added
diff --git a/crates/asterisk-rs-ami/Cargo.toml b/crates/asterisk-rs-ami/Cargo.toml
index c49c92c..59a64f9 100644
--- a/crates/asterisk-rs-ami/Cargo.toml
+++ b/crates/asterisk-rs-ami/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "asterisk-rs-ami"
-version = "0.5.0"
+version = "0.6.0"
 description = "Async Rust client for the Asterisk Manager Interface (AMI)"
 edition.workspace = true
 rust-version.workspace = true
@@ -14,7 +14,7 @@ readme = "README.md"
 workspace = true
 
 [dependencies]
-asterisk-rs-core = { path = "../asterisk-rs-core", version = "0.3.0" }
+asterisk-rs-core = { path = "../asterisk-rs-core", version = "0.6.0" }
 tokio = { workspace = true, features = ["net", "sync", "time", "io-util", "macros", "rt"] }
 tokio-util = { workspace = true, features = ["codec"] }
 bytes.workspace = true
diff --git a/crates/asterisk-rs-ari/CHANGELOG.md b/crates/asterisk-rs-ari/CHANGELOG.md
index d01de38..9a666f3 100644
--- a/crates/asterisk-rs-ari/CHANGELOG.md
+++ b/crates/asterisk-rs-ari/CHANGELOG.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- harden credential handling, codec safety, and API consistency
+
+
+### Other
+- apply rustfmt formatting fixes
+
+
 ## [0.3.1](https://github.com/deadcode-walker/asterisk-rs/compare/asterisk-rs-ari-v0.3.0...asterisk-rs-ari-v0.3.1) - 2026-03-18
 
 ### Added
diff --git a/crates/asterisk-rs-ari/Cargo.toml b/crates/asterisk-rs-ari/Cargo.toml
index b78a387..0dcfbda 100644
--- a/crates/asterisk-rs-ari/Cargo.toml
+++ b/crates/asterisk-rs-ari/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "asterisk-rs-ari"
-version = "0.4.1"
+version = "0.6.0"
 description = "Async Rust client for the Asterisk REST Interface (ARI)"
 edition.workspace = true
 rust-version.workspace = true
@@ -14,7 +14,7 @@ readme = "README.md"
 workspace = true
 
 [dependencies]
-asterisk-rs-core = { path = "../asterisk-rs-core", version = "0.3.0" }
+asterisk-rs-core = { path = "../asterisk-rs-core", version = "0.6.0" }
 tokio = { workspace = true, features = ["net", "sync", "time", "macros", "rt"] }
 reqwest.workspace = true
 tokio-tungstenite.workspace = true
diff --git a/crates/asterisk-rs-core/CHANGELOG.md b/crates/asterisk-rs-core/CHANGELOG.md
index b554756..e8e3127 100644
--- a/crates/asterisk-rs-core/CHANGELOG.md
+++ b/crates/asterisk-rs-core/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- harden credential handling, codec safety, and API consistency
+
+
 ## [0.2.1](https://github.com/deadcode-walker/asterisk-rs/compare/asterisk-rs-core-v0.2.0...asterisk-rs-core-v0.2.1) - 2026-03-18
 
 ### Added
diff --git a/crates/asterisk-rs-core/Cargo.toml b/crates/asterisk-rs-core/Cargo.toml
index 8c9487b..890213e 100644
--- a/crates/asterisk-rs-core/Cargo.toml
+++ b/crates/asterisk-rs-core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "asterisk-rs-core"
-version = "0.3.0"
+version = "0.6.0"
 description = "Shared types, error framework, and event bus for asterisk-rs"
 edition.workspace = true
 rust-version.workspace = true
diff --git a/crates/asterisk-rs/CHANGELOG.md b/crates/asterisk-rs/CHANGELOG.md
index 8271806..cdb2a57 100644
--- a/crates/asterisk-rs/CHANGELOG.md
+++ b/crates/asterisk-rs/CHANGELOG.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- harden credential handling, codec safety, and API consistency
+
+
+### Other
+- apply rustfmt formatting fixes
+
+
 ## [0.1.4](https://github.com/deadcode-walker/asterisk-rs/compare/asterisk-rs-v0.1.3...asterisk-rs-v0.1.4) - 2026-03-18
 
 ### Other
diff --git a/crates/asterisk-rs/Cargo.toml b/crates/asterisk-rs/Cargo.toml
index 127bcfa..ce6e449 100644
--- a/crates/asterisk-rs/Cargo.toml
+++ b/crates/asterisk-rs/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "asterisk-rs"
-version = "0.1.7"
+version = "0.6.0"
 description = "Async Rust client for Asterisk AMI, AGI, and ARI"
 edition.workspace = true
 rust-version.workspace = true
@@ -15,10 +15,10 @@ readme = "../../README.md"
 workspace = true
 
 [dependencies]
-asterisk-rs-core = { path = "../asterisk-rs-core", version = "0.3.0" }
-asterisk-rs-ami = { path = "../asterisk-rs-ami", version = "0.5.0", optional = true }
-asterisk-rs-agi = { path = "../asterisk-rs-agi", version = "0.2.2", optional = true }
-asterisk-rs-ari = { path = "../asterisk-rs-ari", version = "0.4.1", optional = true }
+asterisk-rs-core = { path = "../asterisk-rs-core", version = "0.6.0" }
+asterisk-rs-ami = { path = "../asterisk-rs-ami", version = "0.6.0", optional = true }
+asterisk-rs-agi = { path = "../asterisk-rs-agi", version = "0.6.0", optional = true }
+asterisk-rs-ari = { path = "../asterisk-rs-ari", version = "0.6.0", optional = true }
 thiserror.workspace = true
 tokio.workspace = true