1 files changed, 2 insertions, 0 deletions
diff --git a/INSTALL b/INSTALL
index 5b1c21dac..834972c9c 100644
--- a/INSTALL
+++ b/INSTALL
@@ -23,6 +23,8 @@ REQUIREMENTS
    - Net_SMTP (latest from https://github.com/pear/Net_SMTP/)
    - Net_IDNA2 0.1.1 or newer
    - Auth_SASL 1.0.6 or newer
+   - Net_Sieve 1.8.2 or newer (for managesieve plugin)
+   - Crypt_GPG 1.2.0 or newer (for enigma plugin)
 * php.ini options (see .htaccess file):
    - error_reporting E_ALL & ~E_NOTICE (or lower)
    - memory_limit > 16MB (increase as suitable to support large attachments)