diff --git a/.changeset/deep-berries-feel.md b/.changeset/deep-berries-feel.md
deleted file mode 100644
index c3490544..00000000
--- a/.changeset/deep-berries-feel.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@rebilly/client-php": patch
----
-
-chore(deps): bump picomatch
diff --git a/.changeset/eight-shirts-fry.md b/.changeset/eight-shirts-fry.md
deleted file mode 100644
index 53f3a351..00000000
--- a/.changeset/eight-shirts-fry.md
+++ /dev/null
@@ -1,25 +0,0 @@
----
-"@rebilly/client-php": major
----
-
-### Added
-
-- Added optional response property `canceledTime` on `Subscription` — `GET /search`, `GET /subscriptions` + 5 more
-- Added optional response property `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Added optional response property `inputType` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `inputType` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Added optional response property `minimumAge` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `minimumAge` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Added optional response property `placeholder` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `placeholder` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-
-### Enum changes
-
-- Enum value added on request `attribute`: `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Enum value added on response `attribute`: `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-
-### Other
-
-- response-property-min-decreased (20x) — e.g. the `items/oneOf[#/components/schemas/OneTimeOrder]/_embedded/website/settings/payoutRequest/pendingPeriodHours` respons
-- request-property-min-decreased (7x) — e.g. the `oneOf[#/components/schemas/OneTimeOrder]/_embedded/website/settings/payoutRequest/pendingPeriodHours` request prope
diff --git a/.changeset/puny-pears-design.md b/.changeset/puny-pears-design.md
deleted file mode 100644
index bfb14054..00000000
--- a/.changeset/puny-pears-design.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@rebilly/client-php": patch
----
-
-chore(deps-dev): bump fast-uri
diff --git a/.changeset/real-cats-attend.md b/.changeset/real-cats-attend.md
deleted file mode 100644
index bfb14054..00000000
--- a/.changeset/real-cats-attend.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@rebilly/client-php": patch
----
-
-chore(deps-dev): bump fast-uri
diff --git a/.changeset/real-towns-move.md b/.changeset/real-towns-move.md
deleted file mode 100644
index a845151c..00000000
--- a/.changeset/real-towns-move.md
+++ /dev/null
@@ -1,2 +0,0 @@
----
----
diff --git a/.changeset/smart-moments-enter.md b/.changeset/smart-moments-enter.md
deleted file mode 100644
index 8a229d1e..00000000
--- a/.changeset/smart-moments-enter.md
+++ /dev/null
@@ -1,3 +0,0 @@
----
-"@rebilly/client-php": patch
----
diff --git a/.changeset/smart-olives-arrive.md b/.changeset/smart-olives-arrive.md
deleted file mode 100644
index 9494bdd9..00000000
--- a/.changeset/smart-olives-arrive.md
+++ /dev/null
@@ -1,20 +0,0 @@
----
-"@rebilly/client-php": minor
----
-
-### Added
-
-- Added optional response property `canceledTime` on `Subscription` — `GET /search`, `GET /subscriptions` + 5 more
-- Added optional response property `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Added optional response property `inputType` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `inputType` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Added optional response property `minimumAge` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `minimumAge` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Added optional response property `placeholder` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `placeholder` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-
-### Enum changes
-
-- Enum value added on request `attribute`: `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Enum value added on response `attribute`: `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
diff --git a/.changeset/tricky-meals-matter.md b/.changeset/tricky-meals-matter.md
deleted file mode 100644
index 53f3a351..00000000
--- a/.changeset/tricky-meals-matter.md
+++ /dev/null
@@ -1,25 +0,0 @@
----
-"@rebilly/client-php": major
----
-
-### Added
-
-- Added optional response property `canceledTime` on `Subscription` — `GET /search`, `GET /subscriptions` + 5 more
-- Added optional response property `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Added optional response property `inputType` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `inputType` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Added optional response property `minimumAge` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `minimumAge` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Added optional response property `placeholder` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-- Added optional request property `placeholder` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-
-### Enum changes
-
-- Enum value added on request `attribute`: `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
-- Enum value added on response `attribute`: `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
-
-### Other
-
-- response-property-min-decreased (20x) — e.g. the `items/oneOf[#/components/schemas/OneTimeOrder]/_embedded/website/settings/payoutRequest/pendingPeriodHours` respons
-- request-property-min-decreased (7x) — e.g. the `oneOf[#/components/schemas/OneTimeOrder]/_embedded/website/settings/payoutRequest/pendingPeriodHours` request prope
diff --git a/.changeset/true-doors-open.md b/.changeset/true-doors-open.md
deleted file mode 100644
index 8546c2ee..00000000
--- a/.changeset/true-doors-open.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@rebilly/client-php": patch
----
-
-fix: Remove snapshot carry on auto-update branches
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 06caac6d..df576d02 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,80 @@
 # @rebilly/client-php
 
+## 4.0.0
+
+### Major Changes
+
+- ### Added
+
+  - Added optional response property `canceledTime` on `Subscription` — `GET /search`, `GET /subscriptions` + 5 more
+  - Added optional response property `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Added optional response property `inputType` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `inputType` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Added optional response property `minimumAge` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `minimumAge` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Added optional response property `placeholder` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `placeholder` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+
+  ### Enum changes
+
+  - Enum value added on request `attribute`: `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Enum value added on response `attribute`: `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+
+  ### Other
+
+  - response-property-min-decreased (20x) — e.g. the `items/oneOf[#/components/schemas/OneTimeOrder]/_embedded/website/settings/payoutRequest/pendingPeriodHours` respons
+  - request-property-min-decreased (7x) — e.g. the `oneOf[#/components/schemas/OneTimeOrder]/_embedded/website/settings/payoutRequest/pendingPeriodHours` request prope
+
+- ### Added
+
+  - Added optional response property `canceledTime` on `Subscription` — `GET /search`, `GET /subscriptions` + 5 more
+  - Added optional response property `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Added optional response property `inputType` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `inputType` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Added optional response property `minimumAge` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `minimumAge` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Added optional response property `placeholder` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `placeholder` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+
+  ### Enum changes
+
+  - Enum value added on request `attribute`: `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Enum value added on response `attribute`: `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+
+  ### Other
+
+  - response-property-min-decreased (20x) — e.g. the `items/oneOf[#/components/schemas/OneTimeOrder]/_embedded/website/settings/payoutRequest/pendingPeriodHours` respons
+  - request-property-min-decreased (7x) — e.g. the `oneOf[#/components/schemas/OneTimeOrder]/_embedded/website/settings/payoutRequest/pendingPeriodHours` request prope
+
+### Minor Changes
+
+- ### Added
+
+  - Added optional response property `canceledTime` on `Subscription` — `GET /search`, `GET /subscriptions` + 5 more
+  - Added optional response property `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Added optional response property `inputType` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `inputType` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Added optional response property `minimumAge` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `minimumAge` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Added optional response property `placeholder` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+  - Added optional request property `placeholder` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+
+  ### Enum changes
+
+  - Enum value added on request `attribute`: `contentBlock` — `POST /account-registration-settings`, `PUT /account-registration-settings/{id}`
+  - Enum value added on response `attribute`: `contentBlock` — `GET /account-registration-settings`, `POST /account-registration-settings` + 2 more
+
+### Patch Changes
+
+- chore(deps): bump picomatch
+- chore(deps-dev): bump fast-uri
+- chore(deps-dev): bump fast-uri
+-
+- fix: Remove snapshot carry on auto-update branches
+
 ## 3.1.8
 
 ### Patch Changes
diff --git a/package-lock.json b/package-lock.json
index b69a3784..49b72715 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@rebilly/client-php",
-  "version": "3.1.8",
+  "version": "4.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@rebilly/client-php",
-      "version": "3.1.8",
+      "version": "4.0.0",
       "devDependencies": {
         "@changesets/cli": "^2.26.2",
         "@changesets/write": "^0.2.3",
diff --git a/package.json b/package.json
index 515f4306..414c924b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@rebilly/client-php",
   "private": true,
-  "version": "3.1.8",
+  "version": "4.0.0",
   "devDependencies": {
     "@changesets/cli": "^2.26.2",
     "@changesets/write": "^0.2.3",
diff --git a/src/Client.php b/src/Client.php
index 4495fa29..50fb45a2 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -42,7 +42,7 @@ final class Client implements GuzzleClientInterface, PsrClientInterface
 
     public const EXPERIMENTAL_BASE = '/experimental';
 
-    public const SDK_VERSION = '3.1.8';
+    public const SDK_VERSION = '4.0.0';
 
     private GuzzleClient $client;