diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0cea3760e..c23d43e28 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -299,6 +299,12 @@ ensuring data is stored with proper parameter values.
 
 - **Plan Rollback Command** (#8557): Implemented `agents plan rollback <plan-id> [<checkpoint-id>]` for checkpoint-based plan state restoration in Epic #8493. The command restores a plan's sandbox to the state captured at a given checkpoint, discarding all decisions made after that checkpoint. The checkpoint can be specified as an optional positional second argument or via the `--to-checkpoint` named option. Supports `--yes/-y` flag to skip confirmation prompts and `--format/-f` for output format selection (rich/plain/json/yaml). Included with comprehensive BDD test coverage (>= 97%) and spec-aligned output formatting showing rollback summary, changes reverted, impact analysis, and post-rollback state panels.
 
+### Changed
+
+- **Expanded ruff lint scope to cover `.opencode/`** (#10848): The `lint` nox session
+  now includes `.opencode/` as a ruff check target, ensuring Python scripts placed
+  under `.opencode/` are covered by the lint gate.
+
 ### Fixed
 - **ACMS execute-phase assembler respects project-level hot_max_tokens** (#11035): Fixed
   ``_resolve_hot_max_tokens()`` to read ``hot_max_tokens`` from
diff --git a/noxfile.py b/noxfile.py
index cd69dea27..b21586ce1 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -162,7 +162,16 @@ def _install_behave_parallel(session: nox.Session) -> None:
 def lint(session: nox.Session):
     """Check code formatting and linting."""
     session.install("ruff>=0.15,<0.16")
-    session.run("ruff", "check", "src/", "scripts/", "examples/", "features/", "robot/")
+    session.run(
+        "ruff",
+        "check",
+        "src/",
+        "scripts/",
+        "examples/",
+        "features/",
+        "robot/",
+        ".opencode/",
+    )
 
 
 @nox.session(python=DEFAULT_PYTHON, reuse_venv=True, venv_backend="uv")