diff --git a/composer.json b/composer.json
index 4c15fdc..a852ba0 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,6 @@
         "php": "^5.6 || ^7.0"
     },
     "require-dev": {
-        "phpmd/phpmd": "^2.6",
         "phpunit/phpunit": "^5.7",
         "squizlabs/php_codesniffer": "^2.9"
     },
diff --git a/run_phpmd.sh b/run_phpmd.sh
deleted file mode 100755
index d634db8..0000000
--- a/run_phpmd.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/usr/bin/env bash
-
-./vendor/bin/phpmd src text cleancode,codesize,controversial,design,naming,unusedcode
-
-# Available formats: xml, text, html.
-# Available rulesets: cleancode,codesize,controversial,design,naming,unusedcode.