diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50f6862..781a56c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # sapper changelog
 
+## 0.5.1
+
+* Only write service-worker.js to filesystem in dev mode ([#90](https://github.com/sveltejs/sapper/issues/90))
+
 ## 0.5.0
 
 * Experimental support for `sapper export` ([#9](https://github.com/sveltejs/sapper/issues/9))
diff --git a/package.json b/package.json
index 2a446ce..8501e75 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sapper",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "Military-grade apps, engineered by Svelte",
   "main": "lib/index.js",
   "bin": {