diff --git a/composer.json b/composer.json
index 862fd5546..26cf7e4a6 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,8 @@
         "symfony/process": "2.1.*@dev"
     },
     "suggest": {
-        "ext-zip": "Enabling the zip extension allows you to unzip archives, and allows gzip compression of all internet traffic"
+        "ext-zip": "Enabling the zip extension allows you to unzip archives, and allows gzip compression of all internet traffic",
+        "ext-openssl": "Enabling the openssl extension allows you to access https URLs for repositories and packages"
     },
     "autoload": {
         "psr-0": { "Composer": "src/" }