diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 76d5538..7d9b009 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.9.0"
+  ".": "0.10.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4aac78..4fec5c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.10.0](https://github.com/workos/quickstudy/compare/v0.9.0...v0.10.0) (2026-10-16)
+
+
+### Features
+
+* **codex:** OPENAI_CUSTOM_HEADERS via the custom provider's http_headers ([#36](https://github.com/workos/quickstudy/issues/36)) ([6596106](https://github.com/workos/quickstudy/commit/6596106ef48346d8bd306f582e5ed6b3065cc1dc))
+
 ## [0.9.0](https://github.com/workos/quickstudy/compare/v0.8.1...v0.9.0) (2026-10-16)
 
 
diff --git a/package.json b/package.json
index f052c98..e1edb0c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@workos/quickstudy",
-  "version": "0.9.0",
+  "version": "0.10.0",
   "description": "An open-source, company-agnostic eval harness for measuring whether coding agents can complete real integration tasks, across an agent x feature x framework x surface matrix.",
   "license": "MIT",
   "type": "module",
diff --git a/src/build-info.generated.ts b/src/build-info.generated.ts
index c4faf34..2a5fa2f 100644
--- a/src/build-info.generated.ts
+++ b/src/build-info.generated.ts
@@ -9,7 +9,7 @@ export const EMBEDDED_BUILD_INFO: {
   // (the `x-release-please-version` marker anchors the replacement). It is
   // restored as-is after a binary build (scripts/build-binary.ts), so the
   // committed source `--version` stays in lockstep with package.json.
-  version: "0.9.0", // x-release-please-version
+  version: "0.10.0", // x-release-please-version
   revision: null,
   dirty: null,
   sourceHash: null,