diff --git a/src/Symfony/Component/Security/Core/Authorization/Voter/RoleVoter.php b/src/Symfony/Component/Security/Core/Authorization/Voter/RoleVoter.php
index b1468b07d8..cd5a243bda 100644
--- a/src/Symfony/Component/Security/Core/Authorization/Voter/RoleVoter.php
+++ b/src/Symfony/Component/Security/Core/Authorization/Voter/RoleVoter.php
@@ -40,6 +40,10 @@ class RoleVoter implements VoterInterface
                 continue;
             }
 
+            if ('ROLE_PREVIOUS_ADMIN' === $attribute) {
+                trigger_deprecation('symfony/security-core', '5.1', 'The ROLE_PREVIOUS_ADMIN role is deprecated and will be removed in version 6.0, use the IS_IMPERSONATOR attribute instead.');
+            }
+
             $result = VoterInterface::ACCESS_DENIED;
             foreach ($roles as $role) {
                 if ($attribute === $role) {
diff --git a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php
index 6b473c6ffc..9282b0b06f 100644
--- a/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php
+++ b/src/Symfony/Component/Security/Core/Tests/Authorization/Voter/RoleVoterTest.php
@@ -44,6 +44,17 @@ class RoleVoterTest extends TestCase
         ];
     }
 
+    /**
+     * @group legacy
+     * @expectedDeprecation Since symfony/security-core 5.1: The ROLE_PREVIOUS_ADMIN role is deprecated and will be removed in version 6.0, use the IS_IMPERSONATOR attribute instead.
+     */
+    public function testDeprecatedRolePreviousAdmin()
+    {
+        $voter = new RoleVoter();
+
+        $voter->vote($this->getTokenWithRoleNames(['ROLE_USER', 'ROLE_PREVIOUS_ADMIN']), null, ['ROLE_PREVIOUS_ADMIN']);
+    }
+
     protected function getTokenWithRoleNames(array $roles)
     {
         $token = $this->getMockBuilder(AbstractToken::class)->getMock();
diff --git a/src/Symfony/Component/Security/Core/composer.json b/src/Symfony/Component/Security/Core/composer.json
index 8533213148..c8bfb07d05 100644
--- a/src/Symfony/Component/Security/Core/composer.json
+++ b/src/Symfony/Component/Security/Core/composer.json
@@ -18,7 +18,8 @@
     "require": {
         "php": "^7.2.5",
         "symfony/event-dispatcher-contracts": "^1.1|^2",
-        "symfony/service-contracts": "^1.1.6|^2"
+        "symfony/service-contracts": "^1.1.6|^2",
+        "symfony/deprecation-contracts": "^2.1"
     },
     "require-dev": {
         "psr/container": "^1.0",