diff --git a/base/version.go b/base/version.go
index c26393e5a1..a50fc79e77 100644
--- a/base/version.go
+++ b/base/version.go
@@ -20,7 +20,7 @@ const (
 	ProductName = "Couchbase Sync Gateway"
 
 	ProductAPIVersionMajor = "4"
-	ProductAPIVersionMinor = "0"
+	ProductAPIVersionMinor = "1"
 	ProductAPIVersion      = ProductAPIVersionMajor + "." + ProductAPIVersionMinor
 )
 
diff --git a/docs/api/admin-capella.yaml b/docs/api/admin-capella.yaml
index c6dfd9c294..5ace844a76 100644
--- a/docs/api/admin-capella.yaml
+++ b/docs/api/admin-capella.yaml
@@ -10,7 +10,7 @@ openapi: 3.0.3
 info:
   title: App Services Admin API
   description: 'App Services manages access and synchronization between Couchbase Lite and Couchbase Capella'
-  version: '4.0'
+  version: '4.1'
   license:
     name: Business Source License 1.1 (BSL)
     url: 'https://github.com/couchbase/sync_gateway/blob/master/LICENSE'
diff --git a/docs/api/admin.yaml b/docs/api/admin.yaml
index 9b4423b15d..6d76d942ba 100644
--- a/docs/api/admin.yaml
+++ b/docs/api/admin.yaml
@@ -13,7 +13,7 @@ info:
     # Introduction
 
     The Sync Gateway Admin REST API is used to administer user accounts and roles, and to run administrative tasks in superuser mode.
-  version: '4.0'
+  version: '4.1'
   license:
     name: Business Source License 1.1 (BSL)
     url: 'https://github.com/couchbase/sync_gateway/blob/master/LICENSE'
diff --git a/docs/api/diagnostic.yaml b/docs/api/diagnostic.yaml
index 3209da1a86..4daa30a699 100644
--- a/docs/api/diagnostic.yaml
+++ b/docs/api/diagnostic.yaml
@@ -10,7 +10,7 @@ openapi: 3.0.3
 info:
   title: Sync Gateway
   description: Sync Gateway manages access and synchronization between Couchbase Lite and Couchbase Server
-  version: '4.0'
+  version: '4.1'
   license:
     name: Business Source License 1.1 (BSL)
     url: 'https://github.com/couchbase/sync_gateway/blob/master/LICENSE'
diff --git a/docs/api/metric-capella.yaml b/docs/api/metric-capella.yaml
index 647512a20b..8f230c8ee9 100644
--- a/docs/api/metric-capella.yaml
+++ b/docs/api/metric-capella.yaml
@@ -10,7 +10,7 @@ openapi: 3.0.3
 info:
   title: App Services Metrics API
   description: 'App Services manages access and synchronization between Couchbase Lite and Couchbase Capella'
-  version: '4.0'
+  version: '4.1'
   license:
     name: Business Source License 1.1 (BSL)
     url: 'https://github.com/couchbase/sync_gateway/blob/master/LICENSE'
diff --git a/docs/api/metric.yaml b/docs/api/metric.yaml
index c2619f3cb5..46afe6c9b1 100644
--- a/docs/api/metric.yaml
+++ b/docs/api/metric.yaml
@@ -14,7 +14,7 @@ info:
 
     Sync Gateway manages access and synchronization between Couchbase Lite and Couchbase Server.
     The Sync Gateway Metrics REST API returns Sync Gateway metrics, in JSON or Prometheus-compatible formats, for performance monitoring and diagnostic purposes.
-  version: '4.0'
+  version: '4.1'
   license:
     name: Business Source License 1.1 (BSL)
     url: 'https://github.com/couchbase/sync_gateway/blob/master/LICENSE'
diff --git a/docs/api/public.yaml b/docs/api/public.yaml
index a71e980183..e197f60c9e 100644
--- a/docs/api/public.yaml
+++ b/docs/api/public.yaml
@@ -14,7 +14,7 @@ info:
 
     Sync Gateway manages access and synchronization between Couchbase Lite and Couchbase Server.
     The Sync Gateway Public REST API is used for client replication.
-  version: '4.0'
+  version: '4.1'
   license:
     name: Business Source License 1.1 (BSL)
     url: 'https://github.com/couchbase/sync_gateway/blob/master/LICENSE'
diff --git a/manifest/4.0.xml b/manifest/4.0.xml
new file mode 100644
index 0000000000..ddeeddfdfe
--- /dev/null
+++ b/manifest/4.0.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+Copyright 2016-Present Couchbase, Inc.
+
+Use of this software is governed by the Business Source License included in
+the file licenses/BSL-Couchbase.txt.  As of the Change Date specified in that
+file, in accordance with the Business Source License, use of this software will
+be governed by the Apache License, Version 2.0, included in the file
+licenses/APL2.txt.
+-->
+
+<manifest>
+
+  <remote fetch="https://github.com/couchbase/" name="couchbase"/>
+  <default remote="couchbase" revision="master"/>
+
+  <!-- Build Scripts (required on CI servers) -->
+  <project name="product-texts" path="product-texts" remote="couchbase"/>
+  <project name="build" path="cbbuild" remote="couchbase" revision="b1dc2359603ab411ce0788854ea879ce804c9055">
+    <annotation name="VERSION" value="4.0.0"     keep="true"/>
+    <annotation name="BLD_NUM" value="@BLD_NUM@" keep="true"/>
+    <annotation name="RELEASE" value="@RELEASE@" keep="true"/>
+  </project>
+
+
+  <!-- Sync Gateway -->
+   <project name="sync_gateway" path="sync_gateway" remote="couchbase" revision="release/4.0.0" />
+
+</manifest>
diff --git a/manifest/default.xml b/manifest/default.xml
index 89742b2d4b..16c0219d43 100644
--- a/manifest/default.xml
+++ b/manifest/default.xml
@@ -18,7 +18,7 @@ licenses/APL2.txt.
   <!-- Build Scripts (required on CI servers) -->
   <project name="product-texts" path="product-texts" remote="couchbase"/>
   <project name="build" path="cbbuild" remote="couchbase" revision="b1dc2359603ab411ce0788854ea879ce804c9055">
-    <annotation name="VERSION" value="4.0.0"     keep="true"/>
+    <annotation name="VERSION" value="4.1.0"     keep="true"/>
     <annotation name="BLD_NUM" value="@BLD_NUM@" keep="true"/>
     <annotation name="RELEASE" value="@RELEASE@" keep="true"/>
   </project>
diff --git a/manifest/product-config.json b/manifest/product-config.json
index 3a84de6d21..bd34eecc69 100644
--- a/manifest/product-config.json
+++ b/manifest/product-config.json
@@ -2,13 +2,13 @@
     "product": "sync_gateway",
     "manifests": {
         "manifest/default.xml": {
-            "release": "4.0.0",
+            "release": "4.1.0",
             "release_name": "Couchbase Sync Gateway",
             "production": true,
             "interval": 30,
             "go_version": "1.24.4",
             "trigger_blackduck": true,
-            "start_build": 123
+            "start_build": 1
         },
         "manifest/1.4.0.xml": {
             "do-build": false,
@@ -727,6 +727,15 @@
             "trigger_blackduck": true,
             "start_build": 285
         },
+        "manifest/4.0.xml": {
+            "release": "4.0.0",
+            "release_name": "Couchbase Sync Gateway 4.0.0",
+            "production": true,
+            "interval": 120,
+            "go_version": "1.24.4",
+            "trigger_blackduck": true,
+            "start_build": 243
+        },
         "manifest/dev.xml": {
             "do-build": false,
             "release": "dev",