diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 8c563a659..788b0fa76 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.21.3"
+  ".": "0.22.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 55ca3997a..bac83bd80 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## 0.22.0 (2024-09-11)
+
+Full Changelog: [v0.21.3...v0.22.0](https://github.com/val-town/sdk/compare/v0.21.3...v0.22.0)
+
+### Features
+
+* **api:** OpenAPI spec update via Stainless API ([#434](https://github.com/val-town/sdk/issues/434)) ([c7394f6](https://github.com/val-town/sdk/commit/c7394f636c1e2742499b3560d6e5ee288532d387))
+
+
+### Chores
+
+* better object fallback behaviour for casting errors ([#435](https://github.com/val-town/sdk/issues/435)) ([587000e](https://github.com/val-town/sdk/commit/587000edef7d3864aa19c73ec547dd06b821dc47))
+* **internal:** codegen related update ([#429](https://github.com/val-town/sdk/issues/429)) ([283abcd](https://github.com/val-town/sdk/commit/283abcd21d6892bbdec6b934b0e5085406d94ae5))
+* **internal:** codegen related update ([#431](https://github.com/val-town/sdk/issues/431)) ([af64e62](https://github.com/val-town/sdk/commit/af64e62edcd2547ef67687512c1ab1cbd0e9caa0))
+
 ## 0.21.3 (2024-09-09)
 
 Full Changelog: [v0.21.2...v0.21.3](https://github.com/val-town/sdk/compare/v0.21.2...v0.21.3)
diff --git a/package.json b/package.json
index 825482b91..990cfd539 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@valtown/sdk",
-  "version": "0.21.3",
+  "version": "0.22.0",
   "description": "The official TypeScript library for the Val Town API",
   "author": "Val Town <support@val.town>",
   "types": "dist/index.d.ts",
diff --git a/src/core.ts b/src/core.ts
index 592f76bfa..56d3d1e1e 100644
--- a/src/core.ts
+++ b/src/core.ts
@@ -978,6 +978,11 @@ const validatePositiveInteger = (name: string, n: unknown): number => {
 
 export const castToError = (err: any): Error => {
   if (err instanceof Error) return err;
+  if (typeof err === 'object' && err !== null) {
+    try {
+      return new Error(JSON.stringify(err));
+    } catch {}
+  }
   return new Error(err);
 };
 
diff --git a/src/version.ts b/src/version.ts
index bf00281d7..db66d3329 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const VERSION = '0.21.3'; // x-release-please-version
+export const VERSION = '0.22.0'; // x-release-please-version