diff --git a/docs/book.json b/docs/book.json
index 6c39c52..19bd59a 100644
--- a/docs/book.json
+++ b/docs/book.json
@@ -20,8 +20,12 @@
           "text": "Master (Devel)"
         },
         {
+          "value": "/cord-5.0",
+          "text": "5.0 (Stable)"
+        },
+        {
           "value": "/cord-4.1",
-          "text": "4.1"
+          "text": "4.1 (Stable)"
         },
         {
           "value": "/cord-4.0",