diff --git a/composer.json b/composer.json
index 32d7465a..c78749ad 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
         "php": ">=5.4.0",
         "netresearch/jsonmapper": "~0.5",
         "monolog/monolog": "~1.12",
-        "vlucas/phpdotenv" : "~2.0"
+        "vlucas/phpdotenv" : "~1.0"
     },
     "require-dev": {
         "phpunit/phpunit": "~4.4"
diff --git a/src/JiraClient.php b/src/JiraClient.php
index e4264f09..143a3a9e 100644
--- a/src/JiraClient.php
+++ b/src/JiraClient.php
@@ -9,6 +9,8 @@ class JIRAException extends \Exception
 use Monolog\Logger as Logger;
 use Monolog\Handler\StreamHandler;
 
+use Dotenv;
+
 /**
  * interact jira server with REST API.
  */
@@ -82,10 +84,10 @@ protected function filterNullVariable($haystack)
 
     public function __construct()
     {
-        $dotenv = new \Dotenv\Dotenv('.');
-        $dotenv->load();
+        $dotenv = Dotenv::load('.');
 
-        $dotenv->required(['JIRA_HOST', 'JIRA_USER', 'JIRA_PASS']);
+        // not available in dotenv 1.1
+        // $dotenv->required(['JIRA_HOST', 'JIRA_USER', 'JIRA_PASS']);
 
         $this->json_mapper = new \JsonMapper();
         $this->json_mapper->bExceptionOnUndefinedProperty = true;