diff --git a/.changeset/types-0-29-core.md b/.changeset/types-0-29-core.md
new file mode 100644
index 0000000..77cad1c
--- /dev/null
+++ b/.changeset/types-0-29-core.md
@@ -0,0 +1,5 @@
+---
+"@seamless-auth/core": patch
+---
+
+Depend on `@seamless-auth/types` 0.29.0, which adds the optional OAuth state `binding` to the start response and callback request schemas. Apps now resolve a single copy of the types package alongside the client SDKs. The bundled adapter manifest fallback is refreshed against API 0.19.2 (routes unchanged).
diff --git a/.changeset/types-0-29-nextjs.md b/.changeset/types-0-29-nextjs.md
new file mode 100644
index 0000000..d0a17d2
--- /dev/null
+++ b/.changeset/types-0-29-nextjs.md
@@ -0,0 +1,5 @@
+---
+"@seamless-auth/nextjs": patch
+---
+
+Depend on `@seamless-auth/types` 0.29.0, which adds the optional OAuth state `binding` to the start response and callback request schemas. Apps now resolve a single copy of the types package alongside the client SDKs.
diff --git a/packages/core/package.json b/packages/core/package.json
index 6425598..286a3e2 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -51,7 +51,7 @@
         "test:watch": "pnpm run build && NODE_OPTIONS=--experimental-vm-modules jest --watch"
     },
     "dependencies": {
-        "@seamless-auth/types": "^0.28.0",
+        "@seamless-auth/types": "^0.29.0",
         "@types/jsonwebtoken": "^9.0.10",
         "jose": "^6.1.3",
         "jsonwebtoken": "^9.0.2"
diff --git a/packages/core/src/manifest/bundledManifest.ts b/packages/core/src/manifest/bundledManifest.ts
index 1925976..0539e46 100644
--- a/packages/core/src/manifest/bundledManifest.ts
+++ b/packages/core/src/manifest/bundledManifest.ts
@@ -3,7 +3,7 @@ import type { AdapterManifest } from "./adapterManifest.js";
 
 export const BUNDLED_ADAPTER_MANIFEST: AdapterManifest = {
   "schemaVersion": 1,
-  "apiVersion": "0.18.0",
+  "apiVersion": "0.19.2",
   "session": {
     "subject": "sub",
     "token": "token",
diff --git a/packages/nextjs/package.json b/packages/nextjs/package.json
index e4f39ba..c25f3da 100644
--- a/packages/nextjs/package.json
+++ b/packages/nextjs/package.json
@@ -53,7 +53,7 @@
   },
   "dependencies": {
     "@seamless-auth/core": "workspace:^",
-    "@seamless-auth/types": "^0.28.0",
+    "@seamless-auth/types": "^0.29.0",
     "cookie": "^1.1.1"
   },
   "devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d16cea3..21c7ea2 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -24,8 +24,8 @@ importers:
   packages/core:
     dependencies:
       '@seamless-auth/types':
-        specifier: ^0.28.0
-        version: 0.28.0
+        specifier: ^0.29.0
+        version: 0.29.0
       '@types/jsonwebtoken':
         specifier: ^9.0.10
         version: 9.0.10
@@ -144,8 +144,8 @@ importers:
         specifier: workspace:^
         version: link:../core
       '@seamless-auth/types':
-        specifier: ^0.28.0
-        version: 0.28.0
+        specifier: ^0.29.0
+        version: 0.29.0
       cookie:
         specifier: ^1.1.1
         version: 1.1.1
@@ -882,8 +882,8 @@ packages:
     cpu: [x64]
     os: [win32]
 
-  '@seamless-auth/types@0.28.0':
-    resolution: {integrity: sha512-VKb83pSd0KyL608I4pqKxs0KYZNTHlc2CaPula9rtURcgj3eZDky39idSTvsRbHQTlxblvPeNLsgOBnyr+P7FQ==}
+  '@seamless-auth/types@0.29.0':
+    resolution: {integrity: sha512-Moiuw17RNZaORrrb5Wypjvl1iBj5K1PqDQkkK8ACYh9NSHD7khMyHaTsx9AzK6zOqROXgRRrIAurk9S1w2CZhA==}
     engines: {node: '>=22'}
 
   '@sinclair/typebox@0.27.10':
@@ -3433,7 +3433,7 @@ snapshots:
   '@rollup/rollup-win32-x64-msvc@4.60.4':
     optional: true
 
-  '@seamless-auth/types@0.28.0':
+  '@seamless-auth/types@0.29.0':
     dependencies:
       zod: 4.6.5