diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0d75958..f23dc08 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,17 @@ appear in a patch rather than inflating the version toward 1.0 on a crate still
 shape. **Where that happens the entry says so at the top**, because a version number that
 under-signals is only acceptable if the changelog over-signals to compensate.
 
+## 0.4.16
+
+### Fixed
+
+- The verified boundary moves to claude `2.1.220` and codex-cli `0.147.0`. Both
+  pass the live suite with no mapping change: every Claude flag still resolves,
+  and every app-server method the Codex path speaks is still in the 0.147.0
+  protocol. `--permission-prompt-tool` left `claude --help` but is still
+  accepted, verified by direct invocation, so the approvals path is unaffected.
+- Copilot's boundary stays at `1.0.78`, which was not upgraded.
+
 ## 0.4.15
 
 ### Fixed
diff --git a/Cargo.toml b/Cargo.toml
index f4303e8..5924216 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-abstraction"
-version = "0.4.15"
+version = "0.4.16"
 edition = "2024"
 # The floor edition 2024 requires, and where the strictest dependencies (uuid,
 # getrandom) sit. Derived from the dependency graph rather than compile-tested.
diff --git a/src/agent.rs b/src/agent.rs
index f109c29..df5a64f 100644
--- a/src/agent.rs
+++ b/src/agent.rs
@@ -386,10 +386,10 @@ impl Agent {
     #[must_use]
     pub fn verified_version(self) -> crate::Version {
         let (major, minor, patch) = match self {
-            // `claude --version` -> "2.1.212 (Claude Code)"
-            Agent::Claude => (2, 1, 212),
-            // `codex --version` -> "codex-cli 0.146.0"
-            Agent::Codex => (0, 146, 0),
+            // `claude --version` -> "2.1.220 (Claude Code)"
+            Agent::Claude => (2, 1, 220),
+            // `codex --version` -> "codex-cli 0.147.0"
+            Agent::Codex => (0, 147, 0),
             // `copilot --version` -> "GitHub Copilot CLI 1.0.78."
             Agent::Copilot => (1, 0, 78),
         };