diff --git a/Encryption.md b/Encryption.md
index acf2c21..810f053 100644
--- a/Encryption.md
+++ b/Encryption.md
@@ -10,9 +10,12 @@ Currently we support these encryption methods:
 - des-cfb
 - idea-cfb
 - rc2-cfb
+- rc4-md5
 - seed-cfb
 - salsa20-ctr
 
+`rc4-md5` is a safe, fast encryption that use different key per connection. It is recommended for OpenWRT routers.
+
 These methods are legacy and not safe. Do not use them:
 - rc4
-- table
\ No newline at end of file
+- table