diff --git a/composer.json b/composer.json
index 8248b2a..a6d3a6d 100644
--- a/composer.json
+++ b/composer.json
@@ -20,16 +20,19 @@
         "psr/log": "~1.0",
         "zendframework/zend-eventmanager": "2.*",
         "mtymek/mt-mail": "~1.0",
-        "rhumsaa/uuid": "~2.7",
-        "detailnet/dfw-core": "~0.1.1",
-        "detailnet/dfw-log": "~0.2.0",
-        "detailnet/dfw-bernard": "~0.1.1"
+        "ramsey/uuid": "~2.7"
     },
     "require-dev": {
         "phpunit/phpunit": "~4.4.5",
         "squizlabs/php_codesniffer" : "~2.2.0",
         "phpmd/phpmd": "~2.1.3",
-        "satooshi/php-coveralls": "dev-master"
+        "satooshi/php-coveralls": "dev-master",
+        "detailnet/dfw-log": "~0.2.0",
+        "detailnet/dfw-bernard": "~0.1.1"
+    },
+    "suggest": {
+        "detailnet/dfw-log": "For usage of Detail\\Mail\\Listener\\AbstractListener",
+        "detailnet/dfw-bernard": "For usage of Detail\\Mail\\Driver\\Bernard\\BernardDriver"
     },
     "autoload": {
         "psr-0": {