diff --git a/webcal/src/main/java/cn/org/codecrafters/webcal/WebCalendar.java b/webcal/src/main/java/cn/org/codecrafters/webcal/WebCalendar.java
index bc1c2ec..9a99469 100644
--- a/webcal/src/main/java/cn/org/codecrafters/webcal/WebCalendar.java
+++ b/webcal/src/main/java/cn/org/codecrafters/webcal/WebCalendar.java
@@ -17,7 +17,6 @@
 
 package cn.org.codecrafters.webcal;
 
-import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;