diff --git a/README.md b/README.md
index e53999f..d4b2285 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ ALO7ProgressiveMigrationManager starts with finding the corresponding ManagedObj
 ###Installation
 Just drag-and-drop into your project. Or if you prefer to using Cocopods:
 
-    pod 'ALO7ProgressiveMigrationManager', '~> 1.0.0'
+    pod 'ALO7ProgressiveMigrationManager'
 ###API
 ```
 NSError *error;
@@ -98,4 +98,4 @@ ALO7ProgressiveMigrationManager 被许可在 BSD 协议下使用, 查阅 LICENSE
 [apple document lightweight]:https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/CoreDataVersioning/Articles/vmLightweightMigration.html
 [apple document migration]:https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/CoreDataVersioning/Articles/Introduction.html#//apple_ref/doc/uid/TP40004399-CH1-SW1
 [core data book]:https://pragprog.com/book/mzcd2/core-data
-[core data book author twitter]:https://twitter.com/mzarra
\ No newline at end of file
+[core data book author twitter]:https://twitter.com/mzarra