diff --git a/config/initializers/rucaptcha.rb b/config/initializers/rucaptcha.rb
index 81b948d..d774728 100644
--- a/config/initializers/rucaptcha.rb
+++ b/config/initializers/rucaptcha.rb
@@ -2,7 +2,7 @@ RuCaptcha.configure do
   # Color style, default: :colorful, allows: [:colorful, :black_white]
   # self.style = :colorful
   # Custom captcha code expire time if you need, default: 2 minutes
-  # self.expires_in = 120
+  self.expires_in = 60.minutes
   # [Requirement / 重要]
   # Store Captcha code where, this config more like Rails config.cache_store
   # default: Read config info from `Rails.application.config.cache_store`
@@ -18,4 +18,4 @@ RuCaptcha.configure do
   # self.strikethrough = true
   # enable/disable Outline style
   # self.outline = false
-end
\ No newline at end of file
+end