diff --git a/CLOBBER b/CLOBBER
index 3bc7839f3ef7..2c62660b8f5a 100644
--- a/CLOBBER
+++ b/CLOBBER
@@ -22,4 +22,4 @@
 # changes to stick? As of bug 928195, this shouldn't be necessary! Please
 # don't change CLOBBER for WebIDL changes any more.
 
-Modified build files in third_party/libwebrtc - Bug 2064200 - Vendor libwebrtc from e4420efdb7
+Merge day clobber 2026-09-10
\ No newline at end of file
diff --git a/browser/extensions/newtab/manifest.json b/browser/extensions/newtab/manifest.json
index 50e62b6e862b..31394a75df4c 100644
--- a/browser/extensions/newtab/manifest.json
+++ b/browser/extensions/newtab/manifest.json
@@ -2,7 +2,7 @@
   "manifest_version": 2,
   "name": "New Tab",
   "description": "",
-  "version": "157.1.0",
+  "version": "158.0.0",
 
   "browser_specific_settings": {
     "gecko": {
diff --git a/browser/extensions/webcompat/manifest.json b/browser/extensions/webcompat/manifest.json
index 4d37b3ad95ee..94c64a9eedd3 100644
--- a/browser/extensions/webcompat/manifest.json
+++ b/browser/extensions/webcompat/manifest.json
@@ -2,7 +2,7 @@
   "manifest_version": 2,
   "name": "Web Compatibility Interventions",
   "description": "Urgent post-release fixes for web compatibility.",
-  "version": "157.1.0",
+  "version": "158.0.0",
   "browser_specific_settings": {
     "gecko": {
       "id": "webcompat@mozilla.org",
diff --git a/services/sync/modules/constants.sys.mjs b/services/sync/modules/constants.sys.mjs
index 2008a19de1b9..32a1959757c9 100644
--- a/services/sync/modules/constants.sys.mjs
+++ b/services/sync/modules/constants.sys.mjs
@@ -4,7 +4,7 @@
 
 // Don't manually modify this line, as it is automatically replaced on merge day
 // by the gecko_migration.py script.
-export const WEAVE_VERSION = "1.159.0";
+export const WEAVE_VERSION = "1.160.0";
 
 // Sync Server API version that the client supports.
 export const SYNC_API_VERSION = "1.5";