diff --git a/Gemfile b/Gemfile
index 761f408..ee0041e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,6 +4,6 @@ gemspec
 
 gem "rspec"
 gem "mail"
-gem "net-imap", "0.2.2"
+gem "net-imap", "0.5.6"
 gem "net-ldap"
 gem "mime-types"