diff --git a/php/countries.php b/php/countries.php
index edce3277..62e3081a 100644
--- a/php/countries.php
+++ b/php/countries.php
@@ -1,6 +1,8 @@
 <?php
 
+session_set_cookie_params(['samesite' => 'Strict']);
 session_start();
+
 include_once 'db_pdo.php';
 
 // List of all countries
diff --git a/php/logout.php b/php/logout.php
index b356fd51..28c39c8e 100644
--- a/php/logout.php
+++ b/php/logout.php
@@ -1,4 +1,6 @@
 <?php
 
+session_set_cookie_params(['samesite' => 'Strict']);
 session_start();
+
 $_SESSION = [];