diff --git a/MJExtension.podspec b/MJExtension.podspec
index cd2f4c51..56d3f73b 100644
--- a/MJExtension.podspec
+++ b/MJExtension.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "MJExtension"
-  s.version      = "3.1.1"
+  s.version      = "3.1.2"
   s.ios.deployment_target = '8.0'
   s.osx.deployment_target = '10.8'
   s.summary      = "A fast and convenient conversion between JSON and model"