diff --git a/.codex/AGENTS.md b/.codex/AGENTS.md
index 7c6cfa75..0364e354 100644
--- a/.codex/AGENTS.md
+++ b/.codex/AGENTS.md
@@ -6,10 +6,10 @@ This supplements the root `AGENTS.md` with Codex-specific guidance.
 
 | Task Type | Recommended Model |
 |-----------|------------------|
-| Routine coding, tests, formatting | GPT 5.4 |
-| Complex features, architecture | GPT 5.4 |
-| Debugging, refactoring | GPT 5.4 |
-| Security review | GPT 5.4 |
+| Routine coding, tests, formatting | GPT 5.5 |
+| Complex features, architecture | GPT 5.5 |
+| Debugging, refactoring | GPT 5.5 |
+| Security review | GPT 5.5 |
 
 ## Skills Discovery
 
diff --git a/.codex/agents/docs-researcher.toml b/.codex/agents/docs-researcher.toml
index 0daae570..4d6d8f47 100644
--- a/.codex/agents/docs-researcher.toml
+++ b/.codex/agents/docs-researcher.toml
@@ -1,4 +1,4 @@
-model = "gpt-5.4"
+model = "gpt-5.5"
 model_reasoning_effort = "medium"
 sandbox_mode = "read-only"
 
@@ -6,4 +6,4 @@ developer_instructions = """
 Verify APIs, framework behavior, and release-note claims against primary documentation before changes land.
 Cite the exact docs or file paths that support each claim.
 Do not invent undocumented behavior.
-"""
\ No newline at end of file
+"""
diff --git a/.codex/agents/explorer.toml b/.codex/agents/explorer.toml
index 732df7af..5665e2c8 100644
--- a/.codex/agents/explorer.toml
+++ b/.codex/agents/explorer.toml
@@ -1,4 +1,4 @@
-model = "gpt-5.4"
+model = "gpt-5.5"
 model_reasoning_effort = "medium"
 sandbox_mode = "read-only"
 
@@ -6,4 +6,4 @@ developer_instructions = """
 Stay in exploration mode.
 Trace the real execution path, cite files and symbols, and avoid proposing fixes unless the parent agent asks for them.
 Prefer targeted search and file reads over broad scans.
-"""
\ No newline at end of file
+"""
diff --git a/.codex/agents/reviewer.toml b/.codex/agents/reviewer.toml
index b13ed9cf..4c27fdac 100644
--- a/.codex/agents/reviewer.toml
+++ b/.codex/agents/reviewer.toml
@@ -1,4 +1,4 @@
-model = "gpt-5.4"
+model = "gpt-5.5"
 model_reasoning_effort = "high"
 sandbox_mode = "read-only"
 
@@ -6,4 +6,4 @@ developer_instructions = """
 Review like an owner.
 Prioritize correctness, security, behavioral regressions, and missing tests.
 Lead with concrete findings and avoid style-only feedback unless it hides a real bug.
-"""
\ No newline at end of file
+"""