diff --git a/composer.json b/composer.json
index 5c0a3af..1b3101d 100644
--- a/composer.json
+++ b/composer.json
@@ -23,6 +23,9 @@
         "phpunit/phpunit": "~4.4",
         "squizlabs/php_codesniffer": "~2.0"
     },
+    "suggest": {
+        "composer/ca-bundle": "Including this library will ensure that a valid CA bundle is available for secure connections"
+    },
     "autoload": {
         "psr-4": {
             "SendGrid\\": "lib/"
diff --git a/lib/Client.php b/lib/Client.php
index ec732b9..4480d92 100644
--- a/lib/Client.php
+++ b/lib/Client.php
@@ -367,6 +367,15 @@ private function createCurlOptions($method, $body = null, $headers = null)
         }
         $options[CURLOPT_HTTPHEADER] = $headers;
 
+        if (class_exists('\\Composer\\CaBundle\\CaBundle') && method_exists('\\Composer\\CaBundle\\CaBundle', 'getSystemCaRootBundlePath')) {
+            $caPathOrFile = \Composer\CaBundle\CaBundle::getSystemCaRootBundlePath();
+            if (is_dir($caPathOrFile) || (is_link($caPathOrFile) && is_dir(readlink($caPathOrFile)))) {
+                $options[CURLOPT_CAPATH] = $caPathOrFile;
+            } else {
+                $options[CURLOPT_CAINFO] = $caPathOrFile;
+            }
+        }
+
         return $options;
     }