diff --git a/DCPathButton/Classes/DCPathButton.m b/DCPathButton/Classes/DCPathButton.m
index c3c9c77..d374a72 100644
--- a/DCPathButton/Classes/DCPathButton.m
+++ b/DCPathButton/Classes/DCPathButton.m
@@ -8,7 +8,7 @@
 
 #import "DCPathButton.h"
 
-@interface DCPathButton ()<DCPathItemButtonDelegate>
+@interface DCPathButton ()<DCPathItemButtonDelegate, CAAnimationDelegate>
 
 #pragma mark - Private Property