diff --git a/.github/plugin/marketplace.json b/.github/plugin/marketplace.json
index b1147bb..ac6ae64 100644
--- a/.github/plugin/marketplace.json
+++ b/.github/plugin/marketplace.json
@@ -10,7 +10,7 @@
     {
       "name": "tmforge",
       "description": "Evidence-backed STRIDE threat modeling with Strider, deterministic validation, and optional tmforge .tm7 authoring.",
-      "version": "0.11.0",
+      "version": "0.12.0",
       "source": "./plugins/tmforge"
     }
   ]
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 78e7f27..8032c17 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.11.0"
+  ".": "0.12.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4318e44..40120e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## [0.12.0](https://github.com/Hacks4Snacks/tmforge/compare/v0.11.0...v0.12.0) (2026-09-16)
+
+
+### Features
+
+* Add opt-in starter packs to help users adopt and customize declarative security policies ([#112](https://github.com/Hacks4Snacks/tmforge/issues/112)) ([59b65e4](https://github.com/Hacks4Snacks/tmforge/commit/59b65e438110497cf16a9eda626b19b8d05f15f9))
+* copilot plugin marketplace publication ([#106](https://github.com/Hacks4Snacks/tmforge/issues/106)) ([af16a44](https://github.com/Hacks4Snacks/tmforge/commit/af16a445ce416255e87a5ff2e6cc656ff35450a1))
+* Expose cacheable MCP grounding resources ([#113](https://github.com/Hacks4Snacks/tmforge/issues/113)) ([f4c4a22](https://github.com/Hacks4Snacks/tmforge/commit/f4c4a2255363ecebd82bbcf874383c34035c3f9c))
+* Extend custom rule packs ([#111](https://github.com/Hacks4Snacks/tmforge/issues/111)) ([4a418e6](https://github.com/Hacks4Snacks/tmforge/commit/4a418e6cc33af1b8334e24ca5be1d6c87ada30c8))
+
+
+### Bug Fixes
+
+* preserve model semantics during tidy and CLI layout ([#109](https://github.com/Hacks4Snacks/tmforge/issues/109)) ([1915631](https://github.com/Hacks4Snacks/tmforge/commit/1915631251eb85de63a0944a0f2637b13a7c5993))
+
 ## [0.11.0](https://github.com/Hacks4Snacks/tmforge/compare/v0.10.0...v0.11.0) (2026-09-04)
 
 
diff --git a/Directory.Build.props b/Directory.Build.props
index b5fa5d7..8cc72fd 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -24,7 +24,7 @@
        annotation on the line below is how its generic updater finds the value. See
        release-please-config.json and .github/workflows/release-please.yml. -->
   <PropertyGroup>
-    <VersionPrefix>0.11.0</VersionPrefix> <!-- x-release-please-version -->
+    <VersionPrefix>0.12.0</VersionPrefix> <!-- x-release-please-version -->
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/plugins/tmforge/plugin.json b/plugins/tmforge/plugin.json
index 6b047d9..8ca6a29 100644
--- a/plugins/tmforge/plugin.json
+++ b/plugins/tmforge/plugin.json
@@ -2,7 +2,7 @@
   "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
   "name": "tmforge",
   "description": "Evidence-backed STRIDE threat modeling with Strider, deterministic validation, and optional tmforge .tm7 authoring.",
-  "version": "0.11.0",
+  "version": "0.12.0",
   "author": {
     "name": "Mark Dalton Gray",
     "url": "https://github.com/Hacks4Snacks"