diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index af718e5..ef19757 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{".":"1.4.0"}
+{".":"1.5.0"}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index dadd49e..af20bd4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.5.0](https://github.com/devsy-org/devsy-runtime-sdk/compare/v1.4.0...v1.5.0) (2026-10-08)
+
+
+### Features
+
+* **runtime:** validate workspace reuse without mutation ([482a756](https://github.com/devsy-org/devsy-runtime-sdk/commit/482a756ccec7cec6174e4d87bd51d8852fa71fa8))
+
 ## [1.4.0](https://github.com/devsy-org/devsy-runtime-sdk/compare/v1.3.0...v1.4.0) (2026-10-07)