diff --git a/README.md b/README.md
index e72728e..897a4d2 100644
--- a/README.md
+++ b/README.md
@@ -18,12 +18,10 @@ composer require abacaphiliac/zend-phpdotenv
 3. Use `getenv()` anywhere in your code (or config) to pull environment variables.
 
 # Dependencies
-php >=5.3.9 and ZF >=2.3
+php >=5.3.9 and ZF >=2
 
 See [composer.json](composer.json).
 
-TODO Compatibility with ZF <2.3
-
 ## Contributing
 ```
 composer install && vendor/bin/phing
diff --git a/composer.json b/composer.json
index a6ed22b..f378220 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
     "require": {
         "vlucas/phpdotenv": "^2.2",
         "zendframework/zend-eventmanager": "^2",
-        "zendframework/zend-modulemanager": "^2.3",
+        "zendframework/zend-modulemanager": "^2",
         "zendframework/zend-servicemanager": "^2"
     },
     "require-dev": {