diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9abfbd..25107f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.3.57
+
+- rook signs its work: commits made through git_commit carry a Co-Authored-By trailer tied to the rook-agent-code account (added in the tool, once, never duplicated), and pull requests the agent opens end with a generated-by line. Set "attribution": false in rook.json to turn both off for repositories whose conventions forbid attribution.
+
 ## 0.3.56
 
 - Selecting text no longer slows the app: mouse drag bursts coalesce in the run loop (plumage 0.3.1), so a drag costs one render instead of one per motion report. Subagent tool rows append with a plain push in the common case, and custom slash commands are cached instead of re-reading every file per invocation. (#312, #253, #270)
diff --git a/rv.toml b/rv.toml
index 7223f23..31a7ec6 100644
--- a/rv.toml
+++ b/rv.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rook"
-version = "0.3.56"
+version = "0.3.57"
 edition = "v2"
 
 [dependencies]
diff --git a/src/version.rv b/src/version.rv
index 545ea6e..c9d157a 100644
--- a/src/version.rv
+++ b/src/version.rv
@@ -4,5 +4,5 @@
 // version_test.rv: bump both together for a release or CI fails.
 
 fun version() -> String {
-    return "0.3.56"
+    return "0.3.57"
 }