diff --git a/public/sw-field.js b/public/sw-field.js
index 7e99640..aa13c50 100644
--- a/public/sw-field.js
+++ b/public/sw-field.js
@@ -12,7 +12,12 @@
 // Cache names are deliberately prefixed with `field-` so they never
 // collide with the main `rc-shell-v*` / `rc-data-v*` caches.
 
-const SHELL_CACHE = "field-shell-v1";
+// Bumped to v2 after the Apple HIG polish pass (liquid-glass chrome,
+// iOS SegmentedControl, ThresholdMeter). The activate handler keeps
+// only this name + DATA_CACHE — anything else starting with `field-`
+// (including the old v1) is evicted on the next SW activation, which
+// happens automatically because the bytes of this file changed.
+const SHELL_CACHE = "field-shell-v2";
 const DATA_CACHE = "field-data-v1";
 const OFFLINE_URL = "/offline.html";