diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
index 42c3df54a2..3ae8b9ea44 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/AbstractSessionHandler.php
@@ -31,6 +31,7 @@ abstract class AbstractSessionHandler implements \SessionHandlerInterface, \Sess
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function open($savePath, $sessionName)
     {
         $this->sessionName = $sessionName;
@@ -66,6 +67,7 @@ abstract class AbstractSessionHandler implements \SessionHandlerInterface, \Sess
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function validateId($sessionId)
     {
         $this->prefetchData = $this->read($sessionId);
@@ -86,6 +88,7 @@ abstract class AbstractSessionHandler implements \SessionHandlerInterface, \Sess
     /**
      * @return string
      */
+    #[\ReturnTypeWillChange]
     public function read($sessionId)
     {
         if (null !== $this->prefetchId) {
@@ -109,6 +112,7 @@ abstract class AbstractSessionHandler implements \SessionHandlerInterface, \Sess
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function write($sessionId, $data)
     {
         if (null === $this->igbinaryEmptyData) {
@@ -126,6 +130,7 @@ abstract class AbstractSessionHandler implements \SessionHandlerInterface, \Sess
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function destroy($sessionId)
     {
         if (!headers_sent() && filter_var(ini_get('session.use_cookies'), \FILTER_VALIDATE_BOOLEAN)) {
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/StrictSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/StrictSessionHandler.php
index 3144ea597e..627bcfa1df 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/StrictSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/StrictSessionHandler.php
@@ -33,6 +33,7 @@ class StrictSessionHandler extends AbstractSessionHandler
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function open($savePath, $sessionName)
     {
         parent::open($savePath, $sessionName);
@@ -51,6 +52,7 @@ class StrictSessionHandler extends AbstractSessionHandler
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function updateTimestamp($sessionId, $data)
     {
         return $this->write($sessionId, $data);
@@ -67,6 +69,7 @@ class StrictSessionHandler extends AbstractSessionHandler
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function destroy($sessionId)
     {
         $this->doDestroy = true;
@@ -88,14 +91,16 @@ class StrictSessionHandler extends AbstractSessionHandler
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function close()
     {
         return $this->handler->close();
     }
 
     /**
-     * @return bool
+     * @return int|false
      */
+    #[\ReturnTypeWillChange]
     public function gc($maxlifetime)
     {
         return $this->handler->gc($maxlifetime);
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/SessionHandlerProxy.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/SessionHandlerProxy.php
index de4f550bad..5535bc9644 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/SessionHandlerProxy.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/SessionHandlerProxy.php
@@ -38,6 +38,7 @@ class SessionHandlerProxy extends AbstractProxy implements \SessionHandlerInterf
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function open($savePath, $sessionName)
     {
         return (bool) $this->handler->open($savePath, $sessionName);
@@ -46,6 +47,7 @@ class SessionHandlerProxy extends AbstractProxy implements \SessionHandlerInterf
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function close()
     {
         return (bool) $this->handler->close();
@@ -54,6 +56,7 @@ class SessionHandlerProxy extends AbstractProxy implements \SessionHandlerInterf
     /**
      * @return string
      */
+    #[\ReturnTypeWillChange]
     public function read($sessionId)
     {
         return (string) $this->handler->read($sessionId);
@@ -62,6 +65,7 @@ class SessionHandlerProxy extends AbstractProxy implements \SessionHandlerInterf
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function write($sessionId, $data)
     {
         return (bool) $this->handler->write($sessionId, $data);
@@ -70,22 +74,25 @@ class SessionHandlerProxy extends AbstractProxy implements \SessionHandlerInterf
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function destroy($sessionId)
     {
         return (bool) $this->handler->destroy($sessionId);
     }
 
     /**
-     * @return bool
+     * @return int|false
      */
+    #[\ReturnTypeWillChange]
     public function gc($maxlifetime)
     {
-        return (bool) $this->handler->gc($maxlifetime);
+        return $this->handler->gc($maxlifetime);
     }
 
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function validateId($sessionId)
     {
         return !$this->handler instanceof \SessionUpdateTimestampHandlerInterface || $this->handler->validateId($sessionId);
@@ -94,6 +101,7 @@ class SessionHandlerProxy extends AbstractProxy implements \SessionHandlerInterf
     /**
      * @return bool
      */
+    #[\ReturnTypeWillChange]
     public function updateTimestamp($sessionId, $data)
     {
         return $this->handler instanceof \SessionUpdateTimestampHandlerInterface ? $this->handler->updateTimestamp($sessionId, $data) : $this->write($sessionId, $data);