diff --git a/README.md b/README.md
index 77cb1870..2de6a08d 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 - Contributors: Mailjet
 - Tags: email, marketing, signup, newsletter, widget, smtp, mailjet
 - Requires at least: 3.9
-- Tested up to: 5.1
+- Tested up to: 5.1.1
 - Stable tag: 5.0.11
 - License: GPLv2 or later
 - License URI: http://www.gnu.org/licenses/gpl-2.0.html
diff --git a/README.txt b/README.txt
index bae29119..abc5f103 100644
--- a/README.txt
+++ b/README.txt
@@ -3,7 +3,7 @@
 Contributors: Mailjet
 Tags: email, marketing, signup, newsletter, widget, smtp, mailjet
 Requires at least: 3.9
-Tested up to: 5.1
+Tested up to: 5.1.1
 Stable tag: 5.0.11
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html