diff --git a/articles/lfu-cache.md b/articles/lfu-cache.md
index 63babaf22..e0d5844d5 100644
--- a/articles/lfu-cache.md
+++ b/articles/lfu-cache.md
@@ -623,10 +623,6 @@ class LinkedList:
         self.pop(self.left.next.val)
         return res
 
-    def update(self, val):
-        self.pop(val)
-        self.pushRight(val)
-
 class LFUCache:
 
     def __init__(self, capacity: int):
@@ -720,11 +716,6 @@ class DoublyLinkedList {
         pop(res);
         return res;
     }
-
-    public void update(int val) {
-        pop(val);
-        pushRight(val);
-    }
 }
 
 public class LFUCache {
@@ -844,11 +835,6 @@ class LFUCache {
             pop(res);
             return res;
         }
-
-        void update(int val) {
-            pop(val);
-            pushRight(val);
-        }
     };
 
     int capacity;
@@ -976,14 +962,6 @@ class LinkedList {
         this.pop(res);
         return res;
     }
-
-    /**
-     * @param {number} val
-     */
-    update(val) {
-        this.pop(val);
-        this.pushRight(val);
-    }
 }
 
 class LFUCache {