diff --git a/INSTALL b/INSTALL
index 0f47d1781..fd3c8193a 100644
--- a/INSTALL
+++ b/INSTALL
@@ -21,7 +21,7 @@ REQUIREMENTS
    - Net_IDNA2 0.1.1 or newer
    - Auth_SASL 1.0.6 or newer
    - Net_Sieve 1.3.2 or newer (for managesieve plugin)
-   - Crypt_GPG 1.2.0 or newer (for enigma plugin)
+   - Crypt_GPG 1.4.0 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)
diff --git a/composer.json-dist b/composer.json-dist
index 09e8b5866..ac786614d 100644
--- a/composer.json-dist
+++ b/composer.json-dist
@@ -27,7 +27,7 @@
         "pear-pear.php.net/net_idna2": "~0.1.1",
         "pear-pear.php.net/mail_mime": "~1.10.0",
         "pear-pear.php.net/net_smtp": "~1.7.1",
-        "pear-pear.php.net/crypt_gpg": "*",
+        "pear-pear.php.net/crypt_gpg": "~1.4.0",
         "roundcube/net_sieve": "~1.5.0"
     },
     "require-dev": {