diff --git a/README.md b/README.md
index 614674a4ec..24a7912db2 100644
--- a/README.md
+++ b/README.md
@@ -265,11 +265,12 @@ The following community-contributed extensions are available in [`catalog.commun
 | Security Review | Full-project secure-by-design security audits plus staged, branch/PR, plan, task, follow-up, and apply reviews | `code` | Read+Write | [spec-kit-security-review](https://github.com/DyanGalih/spec-kit-security-review) |
 | SFSpeckit | Enterprise Salesforce SDLC with 18 commands for the full SDD lifecycle. | `process` | Read+Write | [spec-kit-sf](https://github.com/ysumanth06/spec-kit-sf) |
 | Ship Release Extension | Automates release pipeline: pre-flight checks, branch sync, changelog generation, CI verification, and PR creation | `process` | Read+Write | [spec-kit-ship](https://github.com/arunt14/spec-kit-ship) |
-| Spec Reference Loader | Reads the ## References section from the feature spec and loads only the listed docs into context | `docs` | Read-only | [spec-kit-spec-reference-loader](https://github.com/KevinBrown5280/spec-kit-spec-reference-loader) |
+| Spec Changelog | Auto-generate changelogs and release notes from spec git history and requirement diffs | `docs` | Read-only | [spec-kit-changelog](https://github.com/Quratulain-bilal/spec-kit-changelog) |
 | Spec Critique Extension | Dual-lens critical review of spec and plan from product strategy and engineering risk perspectives | `docs` | Read-only | [spec-kit-critique](https://github.com/arunt14/spec-kit-critique) |
 | Spec Diagram | Auto-generate Mermaid diagrams of SDD workflow state, feature progress, and task dependencies | `visibility` | Read-only | [spec-kit-diagram-](https://github.com/Quratulain-bilal/spec-kit-diagram-) |
 | Spec Kit Schedule | Optimal multi-agent task scheduling via CP-SAT — DAG precedence, hallucination-aware caps, file-conflict avoidance, stochastic durations, replanning, and interactive HTML output | `process` | Read+Write | [spec-kit-schedule](https://github.com/jfranc38/spec-kit-schedule) |
 | Spec Orchestrator | Cross-feature orchestration — track state, select tasks, and detect conflicts across parallel specs | `process` | Read-only | [spec-kit-orchestrator](https://github.com/Quratulain-bilal/spec-kit-orchestrator) |
+| Spec Reference Loader | Reads the ## References section from the feature spec and loads only the listed docs into context | `docs` | Read-only | [spec-kit-spec-reference-loader](https://github.com/KevinBrown5280/spec-kit-spec-reference-loader) |
 | Spec Refine | Update specs in-place, propagate changes to plan and tasks, and diff impact across artifacts | `process` | Read+Write | [spec-kit-refine](https://github.com/Quratulain-bilal/spec-kit-refine) |
 | Spec Scope | Effort estimation and scope tracking — estimate work, detect creep, and budget time per phase | `process` | Read-only | [spec-kit-scope-](https://github.com/Quratulain-bilal/spec-kit-scope-) |
 | Spec Sync | Detect and resolve drift between specs and implementation. AI-assisted resolution with human approval | `docs` | Read+Write | [spec-kit-sync](https://github.com/bgervin/spec-kit-sync) |
diff --git a/extensions/catalog.community.json b/extensions/catalog.community.json
index 00bac202a1..a633a3c402 100644
--- a/extensions/catalog.community.json
+++ b/extensions/catalog.community.json
@@ -1,6 +1,6 @@
 {
   "schema_version": "1.0",
-  "updated_at": "2026-05-07T20:05:00Z",
+  "updated_at": "2026-05-11T00:00:00Z",
   "catalog_url": "https://raw.githubusercontent.com/github/spec-kit/main/extensions/catalog.community.json",
   "extensions": {
     "aide": {
@@ -467,6 +467,38 @@
       "created_at": "2026-04-16T00:00:00Z",
       "updated_at": "2026-04-16T00:00:00Z"
     },
+    "changelog": {
+      "name": "Spec Changelog",
+      "id": "changelog",
+      "description": "Auto-generate changelogs and release notes from spec git history and requirement diffs.",
+      "author": "Quratulain-bilal",
+      "version": "1.0.0",
+      "download_url": "https://github.com/Quratulain-bilal/spec-kit-changelog/archive/refs/tags/v1.0.0.zip",
+      "repository": "https://github.com/Quratulain-bilal/spec-kit-changelog",
+      "homepage": "https://github.com/Quratulain-bilal/spec-kit-changelog",
+      "documentation": "https://github.com/Quratulain-bilal/spec-kit-changelog/blob/main/README.md",
+      "changelog": "https://github.com/Quratulain-bilal/spec-kit-changelog/blob/main/CHANGELOG.md",
+      "license": "MIT",
+      "requires": {
+        "speckit_version": ">=0.4.0"
+      },
+      "provides": {
+        "commands": 4,
+        "hooks": 1
+      },
+      "tags": [
+        "changelog",
+        "release-notes",
+        "documentation",
+        "git-history",
+        "notifications"
+      ],
+      "verified": false,
+      "downloads": 0,
+      "stars": 0,
+      "created_at": "2026-04-11T18:00:00Z",
+      "updated_at": "2026-04-11T18:00:00Z"
+    },
     "ci-guard": {
       "name": "CI Guard",
       "id": "ci-guard",