diff --git a/composer.json b/composer.json
index 6b0d591..0255ffa 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,12 @@
 {
     "name": "appdeck/filter",
     "description": "Input data filter",
-    "keywords": ["filter", "user input", "user data", "input filter"],
+    "keywords": [
+        "filter",
+        "user input",
+        "user data",
+        "input filter"
+    ],
     "homepage": "http://appdeck.github.io/filter",
     "license": "GPL-3.0",
     "authors": [
@@ -22,8 +27,8 @@
         "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": {