diff --git a/CHANGELOG.md b/CHANGELOG.md
index acb67b232..02c91e7ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,7 +15,11 @@ Security - in case of vulnerabilities.
 
 ## [Unreleased]
 
-_TBD_
+### Removed
+
+- [x] Removed `SubscriptionService::cancel()` method (use `SubscriptionCancellationService` service instead).
+- [x] Removed `SubscriptionService::changePlan()` method (use `SubscriptionService::changeItems` method instead).
+- [x] Removed `SubscriptionCancel`, `SubscriptionChangePlan` classes.
 
 ## [2.22.0] 2023-05-29
 
diff --git a/src/Entities/Schema.php b/src/Entities/Schema.php
index febbde95d..192a7979a 100644
--- a/src/Entities/Schema.php
+++ b/src/Entities/Schema.php
@@ -123,9 +123,6 @@ public function __construct()
             'subscriptions/{subscriptionId}' => function (array $content) {
                 return new Subscription($content);
             },
-            'subscriptions/{subscriptionId}/change-plan' => function (array $content) {
-                return new Subscription($content);
-            },
             'subscriptions/{subscriptionId}/change-items' => function (array $content) {
                 return new Subscription($content);
             },
diff --git a/src/Entities/SubscriptionCancel.php b/src/Entities/SubscriptionCancel.php
deleted file mode 100644
index b8ab2c721..000000000
--- a/src/Entities/SubscriptionCancel.php
+++ /dev/null
@@ -1,188 +0,0 @@
-<?php
-/**
- * This source file is proprietary and part of Rebilly.
- *
- * (c) Rebilly SRL
- *     Rebilly Ltd.
- *     Rebilly Inc.
- *
- * @see https://www.rebilly.com
- */
-
-namespace Rebilly\Entities;
-
-use DomainException;
-use Rebilly\Rest\Resource;
-
-/**
- * Class SubscriptionCancel.
- *
- * @deprecated use `SubscriptionCancellation` instead.
- */
-class SubscriptionCancel extends Resource
-{
-    public const MSG_UNEXPECTED_POLICY = 'Unexpected type. Only %s types support';
-
-    public const UNEXPECTED_CATEGORY = 'Unexpected cancel category. Only %s categories are supported';
-
-    public const UNEXPECTED_CANCEL_SOURCE = 'Unexpected cancel source. Only %s cancel sources are supported';
-
-    public const AT_NEXT_RENEWAL = 'at-next-renewal';
-
-    public const NOW = 'now';
-
-    public const NOW_WITH_PRORATA_CREDIT = 'now-with-prorata-credit';
-
-    public const CATEGORY_OTHER = 'other';
-
-    public const CATEGORY_BILLING_FAILURE = 'billing-failure';
-
-    public const CATEGORY_DID_NOT_USE = 'did-not-use';
-
-    public const CATEGORY_DID_NOT_WANT = 'did-not-want';
-
-    public const CATEGORY_MISSING_FEATURES = 'missing-features';
-
-    public const CATEGORY_BUGS_OR_PROBLEMS = 'bugs-or-problems';
-
-    public const CATEGORY_DO_NOT_REMEMBER = 'do-not-remember';
-
-    public const CATEGORY_RISK_WARNING = 'risk-warning';
-
-    public const CATEGORY_TOO_EXPENSIVE = 'too-expensive';
-
-    public const SOURCE_MERCHANT = 'merchant';
-
-    public const SOURCE_CUSTOMER = 'customer';
-
-    /**
-     * @return array
-     */
-    public static function policies()
-    {
-        return [
-            self::AT_NEXT_RENEWAL,
-            self::NOW,
-            self::NOW_WITH_PRORATA_CREDIT,
-        ];
-    }
-
-    /**
-     * @return array
-     */
-    public static function cancelCategories()
-    {
-        return [
-            self::CATEGORY_OTHER,
-            self::CATEGORY_BILLING_FAILURE,
-            self::CATEGORY_DID_NOT_USE,
-            self::CATEGORY_DID_NOT_WANT,
-            self::CATEGORY_MISSING_FEATURES,
-            self::CATEGORY_BUGS_OR_PROBLEMS,
-            self::CATEGORY_DO_NOT_REMEMBER,
-            self::CATEGORY_RISK_WARNING,
-            self::CATEGORY_TOO_EXPENSIVE,
-        ];
-    }
-
-    /**
-     * @return array
-     */
-    public static function canceledBySources()
-    {
-        return [
-            self::SOURCE_MERCHANT,
-            self::SOURCE_CUSTOMER,
-        ];
-    }
-
-    /**
-     * @return string
-     */
-    public function getPolicy()
-    {
-        return $this->getAttribute('policy');
-    }
-
-    /**
-     * @return string
-     */
-    public function getCancelCategory()
-    {
-        return $this->getAttribute('cancelCategory');
-    }
-
-    /**
-     * @return string
-     */
-    public function getCanceledBy()
-    {
-        return $this->getAttribute('canceledBy');
-    }
-
-    /**
-     * @return string
-     */
-    public function getCancelDescription()
-    {
-        return $this->getAttribute('cancelDescription');
-    }
-
-    /**
-     * @param string $value
-     *
-     * @return SubscriptionCancel
-     */
-    public function setCancelDescription($value)
-    {
-        return $this->setAttribute('cancelDescription', $value);
-    }
-
-    /**
-     * @param string $value
-     *
-     * @throws DomainException
-     *
-     * @return SubscriptionCancel
-     */
-    public function setPolicy($value)
-    {
-        if (!in_array($value, self::policies(), true)) {
-            throw new DomainException(sprintf(self::MSG_UNEXPECTED_POLICY, implode(', ', self::policies())));
-        }
-
-        return $this->setAttribute('policy', $value);
-    }
-
-    /**
-     * @param string $value
-     *
-     * @throws DomainException
-     *
-     * @return SubscriptionCancel
-     */
-    public function setCancelCategory($value)
-    {
-        if (!in_array($value, self::cancelCategories(), true)) {
-            throw new DomainException(sprintf(self::UNEXPECTED_CATEGORY, implode(', ', self::cancelCategories())));
-        }
-
-        return $this->setAttribute('cancelCategory', $value);
-    }
-
-    /**
-     * @param string $value
-     *
-     * @throws DomainException
-     *
-     * @return SubscriptionCancel
-     */
-    public function setCanceledBy($value)
-    {
-        if (!in_array($value, self::canceledBySources(), true)) {
-            throw new DomainException(sprintf(self::UNEXPECTED_CATEGORY, implode(', ', self::canceledBySources())));
-        }
-
-        return $this->setAttribute('canceledBy', $value);
-    }
-}
diff --git a/src/Entities/SubscriptionChangePlan.php b/src/Entities/SubscriptionChangePlan.php
deleted file mode 100644
index 2b1e145ef..000000000
--- a/src/Entities/SubscriptionChangePlan.php
+++ /dev/null
@@ -1,172 +0,0 @@
-<?php
-/**
- * This source file is proprietary and part of Rebilly.
- *
- * (c) Rebilly SRL
- *     Rebilly Ltd.
- *     Rebilly Inc.
- *
- * @see https://www.rebilly.com
- */
-
-namespace Rebilly\Entities;
-
-use DomainException;
-use Rebilly\Rest\Resource;
-
-/**
- * @deprecated
- * @see SubscriptionChangeItems
- */
-class SubscriptionChangePlan extends Resource
-{
-    public const UNEXPECTED_RENEWAL_POLICY = 'Unexpected renewalPolicy. Only %s are supported';
-
-    public const RENEWAL_POLICY_RESET = 'reset';
-
-    public const RENEWAL_POLICY_RETAIN = 'retain';
-
-    /**
-     * @return array
-     */
-    public static function renewalPolicies()
-    {
-        return [
-            self::RENEWAL_POLICY_RESET,
-            self::RENEWAL_POLICY_RETAIN,
-        ];
-    }
-
-    /**
-     * @param $value
-     */
-    public function setSubscriptionId($value)
-    {
-        $this->setAttribute('subscriptionId', $value);
-    }
-
-    /**
-     * @param $value
-     */
-    public function setPlanId($value)
-    {
-        $this->setAttribute('planId', $value);
-    }
-
-    /**
-     * @param $value
-     *
-     * @throws DomainException
-     */
-    public function setRenewalPolicy($value)
-    {
-        if (!in_array($value, self::renewalPolicies(), true)) {
-            throw new DomainException(sprintf(self::UNEXPECTED_RENEWAL_POLICY, implode(', ', self::renewalPolicies())));
-        }
-        $this->setAttribute('renewalPolicy', $value);
-    }
-
-    /**
-     * @param $value
-     */
-    public function setProrated($value)
-    {
-        $this->setAttribute('prorated', $value);
-    }
-
-    /**
-     * @param $value
-     */
-    public function setEffectiveTime($value)
-    {
-        $this->setAttribute('effectiveTime', $value);
-    }
-
-    /**
-     * @param $value
-     */
-    public function setPreview($value)
-    {
-        $this->setAttribute('preview', $value);
-    }
-
-    /**
-     * @param int $value
-     */
-    public function setQuantity($value)
-    {
-        $this->setAttribute('quantity', $value);
-    }
-
-    /**
-     * @param $value
-     */
-    public function setKeepTrial($value)
-    {
-        $this->setAttribute('keepTrial', $value);
-    }
-
-    /**
-     * @return string
-     */
-    public function getSubscriptionId()
-    {
-        return $this->getAttribute('subscriptionId');
-    }
-
-    /**
-     * @return string
-     */
-    public function getPlanId()
-    {
-        return $this->getAttribute('planId');
-    }
-
-    /**
-     * @return bool
-     */
-    public function getPreview()
-    {
-        return $this->getAttribute('preview');
-    }
-
-    /**
-     * @return bool
-     */
-    public function getProrated()
-    {
-        return $this->getAttribute('prorated');
-    }
-
-    /**
-     * @return string
-     */
-    public function getRenewalPolicy()
-    {
-        return $this->getAttribute('renewalPolicy');
-    }
-
-    /**
-     * @return string
-     */
-    public function getEffectiveTime()
-    {
-        return $this->getAttribute('effectiveTime');
-    }
-
-    /**
-     * @return int
-     */
-    public function getQuantity()
-    {
-        return $this->getAttribute('quantity');
-    }
-
-    /**
-     * @return bool
-     */
-    public function getKeepTrial()
-    {
-        return $this->getAttribute('keepTrial');
-    }
-}
diff --git a/src/Services/SubscriptionService.php b/src/Services/SubscriptionService.php
index 77d739008..69c1aa9e3 100644
--- a/src/Services/SubscriptionService.php
+++ b/src/Services/SubscriptionService.php
@@ -16,9 +16,7 @@
 use Rebilly\Entities\Invoice;
 use Rebilly\Entities\PreviewOrder;
 use Rebilly\Entities\Subscription;
-use Rebilly\Entities\SubscriptionCancel;
 use Rebilly\Entities\SubscriptionChangeItems;
-use Rebilly\Entities\SubscriptionChangePlan;
 use Rebilly\Entities\SubscriptionInterimInvoice;
 use Rebilly\Http\Exception\DataValidationException;
 use Rebilly\Http\Exception\NotFoundException;
@@ -95,25 +93,6 @@ public function update($subscriptionId, $data)
         return $this->client()->put($data, 'subscriptions/{subscriptionId}', ['subscriptionId' => $subscriptionId]);
     }
 
-    /**
-     * @deprecated Use SubscriptionCancellationService instead.
-     *
-     * @param string $subscriptionId
-     * @param array|JsonSerializable|SubscriptionCancel $data
-     *
-     * @throws DataValidationException if input data is not valid
-     *
-     * @return Subscription
-     */
-    public function cancel($subscriptionId, $data)
-    {
-        return $this->client()->post(
-            $data,
-            'subscriptions/{subscriptionId}/cancel',
-            ['subscriptionId' => $subscriptionId]
-        );
-    }
-
     /**
      * @param string $subscriptionId
      */
@@ -132,26 +111,6 @@ public function void($subscriptionId)
         return $this->client()->post([], 'subscriptions/{subscriptionId}/void', ['subscriptionId' => $subscriptionId]);
     }
 
-    /**
-     * @deprecated
-     * @see changeItems
-     *
-     * @param string $subscriptionId
-     * @param array|JsonSerializable|SubscriptionChangePlan $data
-     *
-     * @throws DataValidationException if input data is not valid
-     *
-     * @return Subscription
-     */
-    public function changePlan($subscriptionId, $data)
-    {
-        return $this->client()->post(
-            $data,
-            'subscriptions/{subscriptionId}/change-plan',
-            ['subscriptionId' => $subscriptionId]
-        );
-    }
-
     /**
      * @param string $subscriptionId
      * @param array|JsonSerializable|SubscriptionInterimInvoice $data
diff --git a/tests/Api/ApiTest.php b/tests/Api/ApiTest.php
index f6ed95d79..477d285f4 100644
--- a/tests/Api/ApiTest.php
+++ b/tests/Api/ApiTest.php
@@ -170,7 +170,6 @@ public function provideEntityClasses(): iterable
             [Entities\ResetPasswordToken::class, 'token'],
             [Entities\SubscriptionReactivation::class, null],
             [Entities\Subscription::class],
-            [Entities\SubscriptionCancel::class, null],
             [Entities\SubscriptionCancellation::class, null],
             [Entities\LineItem::class, null],
             [Entities\Transaction::class],
@@ -201,7 +200,6 @@ public function provideEntityClasses(): iterable
             [Entities\Shipping::class],
             [Entities\InvoiceTax::class],
             [Entities\InvoiceTaxItem::class],
-            [Entities\SubscriptionChangePlan::class],
             [Entities\SubscriptionInterimInvoice::class],
             [Entities\PaymentInstruments\BankAccountPaymentInstrument::class, null],
             [Entities\PaymentInstruments\PaymentCardPaymentInstrument::class, null],
diff --git a/tests/Api/ServiceTest.php b/tests/Api/ServiceTest.php
index 77a7b475c..447f9b33e 100644
--- a/tests/Api/ServiceTest.php
+++ b/tests/Api/ServiceTest.php
@@ -463,12 +463,6 @@ public function subscriptionService()
 
         $service = $client->subscriptions();
 
-        $result = $service->cancel('dummy', []);
-        self::assertInstanceOf(Entities\Subscription::class, $result);
-
-        $result = $service->changePlan('dummy', []);
-        self::assertInstanceOf(Entities\Subscription::class, $result);
-
         $result = $service->issueInterimInvoice('dummy', []);
         self::assertInstanceOf(Entities\Subscription::class, $result);
 
diff --git a/tests/Api/SubscriptionTest.php b/tests/Api/SubscriptionTest.php
deleted file mode 100644
index 7124b48b6..000000000
--- a/tests/Api/SubscriptionTest.php
+++ /dev/null
@@ -1,55 +0,0 @@
-<?php
-/**
- * This source file is proprietary and part of Rebilly.
- *
- * (c) Rebilly SRL
- *     Rebilly Ltd.
- *     Rebilly Inc.
- *
- * @see https://www.rebilly.com
- */
-
-namespace Rebilly\Tests\Api;
-
-use DomainException;
-use Rebilly\Entities\SubscriptionCancel;
-use Rebilly\Tests\TestCase as BaseTestCase;
-
-/**
- * Class SubscriptionTest.
- */
-class SubscriptionTest extends BaseTestCase
-{
-    /**
-     * @test
-     */
-    public function cancelPolicyMustBeCorrect()
-    {
-        $subscriptionCancel = new SubscriptionCancel();
-
-        $this->expectException(DomainException::class);
-        $subscriptionCancel->setPolicy('wrong');
-    }
-
-    /**
-     * @test
-     */
-    public function cancelCategoryMustBeCorrect()
-    {
-        $subscriptionCancel = new SubscriptionCancel();
-
-        $this->expectException(DomainException::class);
-        $subscriptionCancel->setCancelCategory('wrong');
-    }
-
-    /**
-     * @test
-     */
-    public function canceledByMustBeCorrect()
-    {
-        $subscriptionCancel = new SubscriptionCancel();
-
-        $this->expectException(DomainException::class);
-        $subscriptionCancel->setCanceledBy('wrong');
-    }
-}
diff --git a/tests/TestCase.php b/tests/TestCase.php
index fb9bcaa96..0a2e7bca3 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -376,16 +376,6 @@ protected function getFakeValue($attribute, $class)
                         );
                 }
                 // no break
-            case 'policy':
-                switch ($class) {
-                    case Entities\SubscriptionCancel::class:
-                        return self::randomElements(Entities\SubscriptionCancel::policies())[0];
-                    default:
-                        throw new InvalidArgumentException(
-                            sprintf('Cannot generate fake value for "%s :: %s"', $class, $attribute)
-                        );
-                }
-                // no break
             case 'items':
                 switch ($class) {
                     case Entities\Subscription::class:
@@ -604,8 +594,6 @@ protected function getFakeValue($attribute, $class)
                     self::TEST_WORD,
                     random_int(1, 100),
                 ];
-            case 'cancelCategory':
-                return self::randomElements(Entities\SubscriptionCancel::cancelCategories())[0];
             case 'reason':
                 switch ($class) {
                     case Entities\CreditMemo::class:
@@ -626,7 +614,7 @@ protected function getFakeValue($attribute, $class)
                     'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
                 ];
             case 'renewalPolicy':
-                return self::randomElements(Entities\SubscriptionChangePlan::renewalPolicies())[0];
+                return self::randomElements(Entities\SubscriptionChangeItems::renewalPolicies())[0];
             case 'notifications':
                 return [
                     [