diff --git a/composer.json b/composer.json
index a77cd27..c355251 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,13 @@
 {
     "name": "appdeck/sql",
     "description": "Abstraction to SQL queries by using a PDO Wrapper",
-    "keywords": ["pdo", "wrapper", "pdo wrapper", "sql", "sql abstraction"],
+    "keywords": [
+        "pdo",
+        "wrapper",
+        "pdo wrapper",
+        "sql",
+        "sql abstraction"
+    ],
     "homepage": "http://appdeck.github.io/sql",
     "license": "GPL-3.0",
     "authors": [
@@ -22,8 +28,8 @@
         "php": ">=5.3.0"
     },
     "require-dev": {
-        "phpdocumentor/phpdocumentor": "2.1.*",
-        "phpunit/phpunit": "4.0.*"
+        "phpdocumentor/phpdocumentor": "^2.9.0",
+        "phpunit/phpunit": "^6.1.3"
     },
     "autoload": {
         "psr-0": {