diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 677b26e..77afd99 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -3,7 +3,7 @@
 `@stainless-code/persist` is a small, freshly extracted library. Before large PRs, please open an issue so we can align on:
 
 - **Public surface** — anything exported from an entry point (`src/core/index.ts` and the opt-in adapter subpaths) is the public API and must carry JSDoc that reads well in hovers and published typings. See [`docs/architecture.md`](../docs/architecture.md) for the seam model.
-- **Runtimes** — **Node** `^20.19.0 || >=22.12.0` and **Bun** `>=1.0.0` (`package.json` **engines**). The core is zero-dep by design (enforced by a gate test on both `persist-core.ts` and `hydration.ts`); each subpath owns its optional peer. Maintainers use **Bun 1.4.0** (`packageManager`).
+- **Runtimes** — **Node** `^20.19.0 || >=22.12.0` and **Bun** `>=1.0.0` (`package.json` **engines**). The core is zero-dep by design (enforced by a gate test on both `persist-core.ts` and `hydration.ts`); each subpath owns its optional peer. Maintainers use **Bun 1.4.1** (`packageManager`).
 
 ## Dev workflow
 
diff --git a/.github/actions/setup/action.yml b/.github/actions/setup/action.yml
index d85ca63..5c8d821 100644
--- a/.github/actions/setup/action.yml
+++ b/.github/actions/setup/action.yml
@@ -7,7 +7,7 @@ runs:
     - name: Setup Bun
       uses: oven-sh/setup-bun@v2
       with:
-        bun-version: 1.4.0
+        bun-version: 1.4.1
 
     - name: Install packages
       shell: bash
diff --git a/package.json b/package.json
index c7c4d7a..162bf7e 100644
--- a/package.json
+++ b/package.json
@@ -360,5 +360,5 @@
     "bun": ">=1.0.0",
     "node": "^20.19.0 || >=22.12.0"
   },
-  "packageManager": "bun@1.4.0"
+  "packageManager": "bun@1.4.1"
 }