diff --git a/WeiboSDK.podspec b/WeiboSDK.podspec
index d4529c5..fd1762e 100644
--- a/WeiboSDK.podspec
+++ b/WeiboSDK.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
   s.name         = "WeiboSDK"
   s.version      = "3.1.3"
-  s.source       = { :git => "https://github.com/sinaweibosdk/weibo_ios_sdk.git", :tag => "3.1.3" }
+  s.source       = { :git => "https://github.com/sinaweibosdk/weibo_ios_sdk.git", :tag => "#{s.version}" }
   s.platform     = :ios, '6.0'
   s.requires_arc = false
   s.source_files = 'libWeiboSDK/*.{h,m}'