diff --git a/book.json b/book.json
index 7e0a0bf..2565479 100644
--- a/book.json
+++ b/book.json
@@ -14,7 +14,7 @@
         "-sharing",
         "splitter",
         "expandable-chapters-small",
-        "anchors",
+        "anchorjs",
         "github",
         "github-buttons",
         "prism",
@@ -42,6 +42,15 @@
                     "count": true
                 }
             ]
+        },
+        "anchorjs": {
+            "selector": "h2,h3,h4,h5",
+            "icon": "#",
+            "placement": "right",
+            "visible": "always",
+            "class": "custom-class another-one",
+            "truncate": 64,
+            "ariaLabel": "Anchor"
         }
     }
 }