diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 2af62b6..904c5f7 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,5 +1,5 @@
 {
-  "packages/sandbox": "0.4.8",
+  "packages/sandbox": "0.4.9",
   "packages/agent": "0.9.9",
   "packages/provider": "0.4.6"
 }
diff --git a/packages/sandbox/CHANGELOG.md b/packages/sandbox/CHANGELOG.md
index 0050409..e9ba6d0 100644
--- a/packages/sandbox/CHANGELOG.md
+++ b/packages/sandbox/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## [0.4.9](https://github.com/coder/ai-sdk/compare/sandbox-v0.4.8...sandbox-v0.4.9) (2026-08-31)
+
+A maintenance release with no user-facing changes.
+
 ## [0.4.8](https://github.com/coder/ai-sdk/compare/sandbox-v0.4.7...sandbox-v0.4.8) (2026-08-30)
 
 A maintenance release with no user-facing changes.
diff --git a/packages/sandbox/package.json b/packages/sandbox/package.json
index d1c890a..f26f8c9 100644
--- a/packages/sandbox/package.json
+++ b/packages/sandbox/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@coder/ai-sdk-sandbox",
-  "version": "0.4.8",
+  "version": "0.4.9",
   "description": "Coder workspace sandbox provider for the Vercel AI SDK v7 HarnessAgent",
   "keywords": [
     "ai-sdk",