diff --git a/phpstan.neon b/phpstan.neon
index 2145a194a..a683931de 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -27,6 +27,27 @@ parameters:
         - '#Unsafe usage of new static\(\)#'
         - '#. but return statement is missing#'
 
+        # ldap_connect() returns `LDAP\Connection` in php >= 81
+        -
+            message: '#Parameter .* of function .* expects .*, .* given#'
+            count: 7
+            path: library/Icinga/Protocol/Ldap/LdapCapabilities.php
+
+        -
+            message: '#Parameter .* of (function|callable) .* expects .*, .* given#'
+            count: 75
+            path: library/Icinga/Protocol/Ldap/LdapConnection.php
+
+        -
+            message: '#Method Icinga\\Protocol\\Ldap\\LdapConnection::(prepareNewConnection|ldapSearch)\(\) should return (resource|bool\|resource) but returns (LDAP\\Connection\|false|array\|LDAP\\Result\|false)#'
+            count: 3
+            path: library/Icinga/Protocol/Ldap/LdapConnection.php
+
+        -
+            message: "#Cannot access offset ('count'|'dn') on array.*#"
+            count: 2
+            path: library/Icinga/Protocol/Ldap/LdapConnection.php
+
     scanDirectories:
         - vendor