diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ae9b4827..37ae50b89 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [Unreleased]
+## [1.91.181.0] - 2026-10-23
 
 **/cso can run its contained runtime checks.** Before this release the runtime catalog qualified nothing, so /cso always fell back to static assessment. It now qualifies ten pinned images: Node 24.4.0, Bun 1.3.10, Python 3.13.4 with uv 0.8.0, Rails on Ruby 3.4.4, and PostgreSQL 17.2, each for linux/amd64 and linux/arm64. With Docker installed, comprehensive /cso boots the target app inside the matching image and tests findings and repairs against it. The images passed the private evaluator's release qualification (run-5 statements, re-delivered under Garry's approval). The ingress then checked them in qualify run 39674065531 at 514fbfd.
 
diff --git a/VERSION b/VERSION
index e59dce263..1662717f2 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.91.180.0
+1.91.181.0
diff --git a/agents-digest/gstack-AGENTS.md b/agents-digest/gstack-AGENTS.md
index fc5723e69..14e8a9dc3 100644
--- a/agents-digest/gstack-AGENTS.md
+++ b/agents-digest/gstack-AGENTS.md
@@ -1,4 +1,4 @@
-# gstack digest v1.91.180.0 — regenerate/re-copy after upgrading gstack
+# gstack digest v1.91.181.0 — regenerate/re-copy after upgrading gstack
 
 Behavioral rules from gstack (https://github.com/garrytan/gstack), compressed
 for agent hosts without a full skill install. The full skills add workflows,
diff --git a/package.json b/package.json
index 727b2b972..bdf731bc3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gstack",
-  "version": "1.91.180",
+  "version": "1.91.181",
   "description": "Garry's Stack — Claude Code skills + fast headless browser. One repo, one install, entire AI engineering workflow.",
   "license": "MIT",
   "type": "module",