diff --git a/CHANGELOG.md b/CHANGELOG.md
index aae1e5699..e8c11d835 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,11 @@ Format based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ## [Unreleased]
 
+## [2.31.1] - 2026-03-18
+
+### Fixed
+- prevent false-positive 'Session lock lost' during auto-mode (#1257)
+
 ## [2.31.0] - 2026-03-18
 
 ### Added
@@ -1260,7 +1265,8 @@ Format based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 ### Changed
 - License updated to MIT
 
-[Unreleased]: https://github.com/gsd-build/gsd-2/compare/v2.31.0...HEAD
+[Unreleased]: https://github.com/gsd-build/gsd-2/compare/v2.31.1...HEAD
+[2.31.1]: https://github.com/gsd-build/gsd-2/compare/v2.31.0...v2.31.1
 [2.31.0]: https://github.com/gsd-build/gsd-2/compare/v2.30.0...v2.31.0
 [2.30.0]: https://github.com/gsd-build/gsd-2/compare/v2.29.0...v2.30.0
 [2.29.0]: https://github.com/gsd-build/gsd-2/compare/v2.28.0...v2.29.0
diff --git a/native/npm/darwin-arm64/package.json b/native/npm/darwin-arm64/package.json
index eb56dda05..d2c42988d 100644
--- a/native/npm/darwin-arm64/package.json
+++ b/native/npm/darwin-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-darwin-arm64",
-  "version": "2.31.0",
+  "version": "2.31.1",
   "description": "GSD native engine binary for macOS ARM64",
   "os": [
     "darwin"
diff --git a/native/npm/darwin-x64/package.json b/native/npm/darwin-x64/package.json
index 421fb9a28..c5328160e 100644
--- a/native/npm/darwin-x64/package.json
+++ b/native/npm/darwin-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-darwin-x64",
-  "version": "2.31.0",
+  "version": "2.31.1",
   "description": "GSD native engine binary for macOS Intel",
   "os": [
     "darwin"
diff --git a/native/npm/linux-arm64-gnu/package.json b/native/npm/linux-arm64-gnu/package.json
index e410924ae..9506d29e1 100644
--- a/native/npm/linux-arm64-gnu/package.json
+++ b/native/npm/linux-arm64-gnu/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-linux-arm64-gnu",
-  "version": "2.31.0",
+  "version": "2.31.1",
   "description": "GSD native engine binary for Linux ARM64 (glibc)",
   "os": [
     "linux"
diff --git a/native/npm/linux-x64-gnu/package.json b/native/npm/linux-x64-gnu/package.json
index 213f5b272..d2dcf154f 100644
--- a/native/npm/linux-x64-gnu/package.json
+++ b/native/npm/linux-x64-gnu/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-linux-x64-gnu",
-  "version": "2.31.0",
+  "version": "2.31.1",
   "description": "GSD native engine binary for Linux x64 (glibc)",
   "os": [
     "linux"
diff --git a/native/npm/win32-x64-msvc/package.json b/native/npm/win32-x64-msvc/package.json
index 75de743bd..15a565324 100644
--- a/native/npm/win32-x64-msvc/package.json
+++ b/native/npm/win32-x64-msvc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-win32-x64-msvc",
-  "version": "2.31.0",
+  "version": "2.31.1",
   "description": "GSD native engine binary for Windows x64 (MSVC)",
   "os": [
     "win32"
diff --git a/package.json b/package.json
index dc43935c4..76aea5279 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gsd-pi",
-  "version": "2.31.0",
+  "version": "2.31.1",
   "description": "GSD — Get Shit Done coding agent",
   "license": "MIT",
   "repository": {
diff --git a/packages/pi-coding-agent/package.json b/packages/pi-coding-agent/package.json
index 64388ec57..d272bf4b7 100644
--- a/packages/pi-coding-agent/package.json
+++ b/packages/pi-coding-agent/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd/pi-coding-agent",
-  "version": "2.31.0",
+  "version": "2.31.1",
   "description": "Coding agent CLI (vendored from pi-mono)",
   "type": "module",
   "piConfig": {
diff --git a/pkg/package.json b/pkg/package.json
index 03a38e5f8..716c25eca 100644
--- a/pkg/package.json
+++ b/pkg/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@glittercowboy/gsd",
-  "version": "2.31.0",
+  "version": "2.31.1",
   "piConfig": {
     "name": "gsd",
     "configDir": ".gsd"