diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 5f67cc4f..a172a2cf 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,7 +11,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                php: ['8.2', '8.3', '8.4']
+                php: ['8.2', '8.3', '8.4', '8.5']
 
             fail-fast: false
 
diff --git a/composer.json b/composer.json
index f2b8fc50..dd055979 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
 		}
 	],
 	"require": {
-		"php": "8.2 - 8.4"
+		"php": "8.2 - 8.5"
 	},
 	"require-dev": {
 		"tracy/tracy": "^2.9",
diff --git a/readme.md b/readme.md
index 47fb7fa4..a0a86310 100644
--- a/readme.md
+++ b/readme.md
@@ -34,7 +34,7 @@ Install Dibi via Composer:
 composer require dibi/dibi
 ```
 
-The Dibi 5.1 requires PHP version 8.2 and supports PHP up to 8.4.
+The Dibi 5.1 requires PHP version 8.2 and supports PHP up to 8.5.
 
 
 Usage
diff --git a/src/Dibi/Connection.php b/src/Dibi/Connection.php
index 916d0956..14fc0320 100644
--- a/src/Dibi/Connection.php
+++ b/src/Dibi/Connection.php
@@ -673,7 +673,7 @@ class Connection implements IConnection
 	/**
 	 * Prevents unserialization.
 	 */
-	public function __wakeup()
+	public function __unserialize($_)
 	{
 		throw new NotSupportedException('You cannot serialize or unserialize ' . static::class . ' instances.');
 	}
@@ -682,7 +682,7 @@ class Connection implements IConnection
 	/**
 	 * Prevents serialization.
 	 */
-	public function __sleep()
+	public function __serialize()
 	{
 		throw new NotSupportedException('You cannot serialize or unserialize ' . static::class . ' instances.');
 	}