diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 71e95ba..d353515 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.20.0"
+  ".": "0.21.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b9c14b4..478082a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,27 @@
 # Changelog
 
+## [0.21.0](https://github.com/rochecompaan/patchmill/compare/v0.20.0...v0.21.0) (2026-09-10)
+
+
+### Features
+
+* **host:** implement Forgejo planning pull request adapter ([#215](https://github.com/rochecompaan/patchmill/issues/215)) ([6055479](https://github.com/rochecompaan/patchmill/commit/60554799e124830f83049eddcc2663eca78e9a41))
+* **host:** implement GitHub planning pull request adapter ([#213](https://github.com/rochecompaan/patchmill/issues/213)) ([2981fd4](https://github.com/rochecompaan/patchmill/commit/2981fd45af0b38708905188a840712342a40bb2b))
+* **run-once:** publish planning pull request phases ([#217](https://github.com/rochecompaan/patchmill/issues/217)) ([dc22d38](https://github.com/rochecompaan/patchmill/commit/dc22d38bae5fd70a4ed3e05385c23b2ab5b8b5ce))
+* **run-once:** recover or reset blocked run-once runs ([#204](https://github.com/rochecompaan/patchmill/issues/204)) ([0b27041](https://github.com/rochecompaan/patchmill/commit/0b27041e69d9fe5bb1b86aaf8999468998722423))
+* **workflow:** Add durable planning state and pull request workspaces ([#216](https://github.com/rochecompaan/patchmill/issues/216)) ([7b4856f](https://github.com/rochecompaan/patchmill/commit/7b4856f22655afee463c9a44ea19cf2433117852))
+* **workflow:** define provider-neutral planning pull request foundations ([#209](https://github.com/rochecompaan/patchmill/issues/209)) ([470891c](https://github.com/rochecompaan/patchmill/commit/470891c2cc57190b68ad82a578c06175fdfe6295))
+
+
+### Bug Fixes
+
+* **deps:** fail fast on stale runtime dependencies ([#200](https://github.com/rochecompaan/patchmill/issues/200)) ([69bab32](https://github.com/rochecompaan/patchmill/commit/69bab325467d042565f6592232eace51020af5d4))
+* **deps:** reuse pi-subagents upgrade PR ([#202](https://github.com/rochecompaan/patchmill/issues/202)) ([8a98c2d](https://github.com/rochecompaan/patchmill/commit/8a98c2db28047076e1fc83a7ebf5068cc4cac2e3))
+* **run-once:** preserve ignored state during blocked retry ([#212](https://github.com/rochecompaan/patchmill/issues/212)) ([cd94670](https://github.com/rochecompaan/patchmill/commit/cd946704b7cd49f317c8feebef95b19f761b9a4d))
+* **site:** remediate dependency advisories ([#214](https://github.com/rochecompaan/patchmill/issues/214)) ([#218](https://github.com/rochecompaan/patchmill/issues/218)) ([da9b143](https://github.com/rochecompaan/patchmill/commit/da9b1437eb48505a7799e8fdfb94bde85988952d))
+* **site:** update smol-toml to remediate avisory GHSA-7w5x-hrqm-74c2 ([#221](https://github.com/rochecompaan/patchmill/issues/221)) ([4c39619](https://github.com/rochecompaan/patchmill/commit/4c3961905ad447ddb2b64c69dc72eb01acd637c7))
+* **validation:** restore baseline quality gates ([#208](https://github.com/rochecompaan/patchmill/issues/208)) ([7a51191](https://github.com/rochecompaan/patchmill/commit/7a511913f6836f401b98052d62af1127721a7085))
+
 ## [0.20.0](https://github.com/rochecompaan/patchmill/compare/v0.19.0...v0.20.0) (2026-08-28)
 
 
diff --git a/nix/package.nix b/nix/package.nix
index 0bd20be..ef0d0c9 100644
--- a/nix/package.nix
+++ b/nix/package.nix
@@ -11,7 +11,7 @@ let
 in
 buildNpmPackageNode24 rec {
   pname = "patchmill";
-  version = "0.20.0"; # x-release-please-version
+  version = "0.21.0"; # x-release-please-version
 
   src = lib.cleanSourceWith {
     src = lib.cleanSource ../.;
@@ -26,7 +26,7 @@ buildNpmPackageNode24 rec {
         || baseName == "result");
   };
 
-  npmDepsHash = "sha256-Wj085JvzgnbL37MxwMC283QOb9fxvkHJHJjvKEgG+PQ=";
+  npmDepsHash = "sha256-QyVNo/l07z7upxcYBTkNIfw+nQNkcNKFEsNhy5SyCrw=";
   npmDepsFetcherVersion = 2;
 
   dontNpmBuild = true;
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 5ea36b0..20ea295 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -1,12 +1,12 @@
 {
   "name": "patchmill",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "patchmill",
-      "version": "0.20.0",
+      "version": "0.21.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@earendil-works/pi-coding-agent": "0.84.2",
diff --git a/package-lock.json b/package-lock.json
index 5ea36b0..20ea295 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "patchmill",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "patchmill",
-      "version": "0.20.0",
+      "version": "0.21.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@earendil-works/pi-coding-agent": "0.84.2",
diff --git a/package.json b/package.json
index 5ebdf0d..2051be7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "patchmill",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "private": false,
   "publishConfig": {
     "access": "public"