diff --git a/api/controllers/AccountsController.php b/api/controllers/AccountsController.php
index 2861d3c..e349d18 100644
--- a/api/controllers/AccountsController.php
+++ b/api/controllers/AccountsController.php
@@ -1,6 +1,7 @@
 <?php
 namespace api\controllers;
 
+use api\models\profile\AcceptRulesForm;
 use api\models\profile\ChangeEmail\ConfirmNewEmailForm;
 use api\models\profile\ChangeEmail\InitStateForm;
 use api\models\profile\ChangeEmail\NewEmailForm;
@@ -21,7 +22,7 @@ class AccountsController extends Controller {
                 'class' => AccessControl::class,
                 'rules' => [
                     [
-                        'actions' => ['current'],
+                        'actions' => ['current', 'accept-rules'],
                         'allow' => true,
                         'roles' => ['@'],
                     ],
@@ -57,6 +58,7 @@ class AccountsController extends Controller {
             'change-email-submit-new-email' => ['POST'],
             'change-email-confirm-new-email' => ['POST'],
             'change-lang' => ['POST'],
+            'accept-rules' => ['POST'],
         ];
     }
 
@@ -185,4 +187,20 @@ class AccountsController extends Controller {
         ];
     }
 
+    public function actionAcceptRules() {
+        $account = Yii::$app->user->identity;
+        $model = new AcceptRulesForm($account);
+        $model->load(Yii::$app->request->post());
+        if (!$model->agreeWithLatestRules()) {
+            return [
+                'success' => false,
+                'errors' => $this->normalizeModelErrors($model->getErrors()),
+            ];
+        }
+
+        return [
+            'success' => true,
+        ];
+    }
+
 }
diff --git a/api/models/profile/AcceptRulesForm.php b/api/models/profile/AcceptRulesForm.php
new file mode 100644
index 0000000..05785f0
--- /dev/null
+++ b/api/models/profile/AcceptRulesForm.php
@@ -0,0 +1,35 @@
+<?php
+namespace api\models\profile;
+
+use api\models\base\ApiForm;
+use common\models\Account;
+use yii\base\ErrorException;
+use const \common\LATEST_RULES_VERSION;
+
+class AcceptRulesForm extends ApiForm {
+
+    /**
+     * @var Account
+     */
+    private $account;
+
+    public function __construct(Account $account, array $config = []) {
+        $this->account = $account;
+        parent::__construct($config);
+    }
+
+    public function agreeWithLatestRules() : bool {
+        $account = $this->getAccount();
+        $account->rules_agreement_version = LATEST_RULES_VERSION;
+        if (!$account->save()) {
+            throw new ErrorException('Cannot set user rules version');
+        }
+
+        return true;
+    }
+
+    public function getAccount() : Account {
+        return $this->account;
+    }
+
+}
diff --git a/tests/codeception/api/_pages/AccountsRoute.php b/tests/codeception/api/_pages/AccountsRoute.php
index 7b4938b..5ff4a3b 100644
--- a/tests/codeception/api/_pages/AccountsRoute.php
+++ b/tests/codeception/api/_pages/AccountsRoute.php
@@ -59,4 +59,9 @@ class AccountsRoute extends BasePage {
         ]);
     }
 
+    public function acceptRules() {
+        $this->route = ['accounts/accept-rules'];
+        $this->actor->sendPOST($this->getUrl());
+    }
+
 }
diff --git a/tests/codeception/api/functional/AccountsAcceptRulesCest.php b/tests/codeception/api/functional/AccountsAcceptRulesCest.php
new file mode 100644
index 0000000..4f6fee7
--- /dev/null
+++ b/tests/codeception/api/functional/AccountsAcceptRulesCest.php
@@ -0,0 +1,28 @@
+<?php
+namespace tests\codeception\api\functional;
+
+use tests\codeception\api\_pages\AccountsRoute;
+use tests\codeception\api\FunctionalTester;
+
+class AccountsAcceptRulesCest {
+
+    /**
+     * @var AccountsRoute
+     */
+    private $route;
+
+    public function _before(FunctionalTester $I) {
+        $this->route = new AccountsRoute($I);
+    }
+
+    public function testCurrent(FunctionalTester $I) {
+        $I->loggedInAsActiveAccount('Veleyaba', 'password_0');
+        $this->route->acceptRules();
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'success' => true,
+        ]);
+    }
+
+}
diff --git a/tests/codeception/api/unit/models/profile/AcceptRulesFormTest.php b/tests/codeception/api/unit/models/profile/AcceptRulesFormTest.php
new file mode 100644
index 0000000..2105a40
--- /dev/null
+++ b/tests/codeception/api/unit/models/profile/AcceptRulesFormTest.php
@@ -0,0 +1,33 @@
+<?php
+namespace codeception\api\unit\models\profile;
+
+use api\models\profile\AcceptRulesForm;
+use Codeception\Specify;
+use common\models\Account;
+use tests\codeception\api\unit\DbTestCase;
+use tests\codeception\common\fixtures\AccountFixture;
+use const common\LATEST_RULES_VERSION;
+
+/**
+ * @property AccountFixture $accounts
+ */
+class AcceptRulesFormTest extends DbTestCase {
+    use Specify;
+
+    public function fixtures() {
+        return [
+            'accounts' => AccountFixture::class,
+        ];
+    }
+
+    public function testApplyLanguage() {
+        $this->specify('rules version bumped to latest', function() {
+            /** @var Account $account */
+            $account = Account::findOne($this->accounts['account-with-old-rules-version']);
+            $model = new AcceptRulesForm($account);
+            expect($model->agreeWithLatestRules())->true();
+            expect($account->rules_agreement_version)->equals(LATEST_RULES_VERSION);
+        });
+    }
+
+}
diff --git a/tests/codeception/common/fixtures/data/accounts.php b/tests/codeception/common/fixtures/data/accounts.php
index b4f66f9..cde12ff 100644
--- a/tests/codeception/common/fixtures/data/accounts.php
+++ b/tests/codeception/common/fixtures/data/accounts.php
@@ -107,4 +107,17 @@ return [
         'created_at' => 1463349615,
         'updated_at' => 1463349615,
     ],
+    'account-with-old-rules-version' => [
+        'id' => 9,
+        'uuid' => '410462d3-8e71-47cc-bac6-64f77f88cf80',
+        'username' => 'Veleyaba',
+        'email' => 'veleyaba@gmail.com',
+        'password_hash' => '$2y$13$2rYkap5T6jG8z/mMK8a3Ou6aZxJcmAaTha6FEuujvHEmybSHRzW5e', # password_0
+        'password_hash_strategy' => \common\models\Account::PASS_HASH_STRATEGY_YII2,
+        'lang' => 'en',
+        'status' => \common\models\Account::STATUS_ACTIVE,
+        'rules_agreement_version' => null,
+        'created_at' => 1470499952,
+        'updated_at' => 1470499952,
+    ],
 ];