diff --git a/.travis.yml b/.travis.yml
index 637081ad..e6b3b5d7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,5 @@ php:
   - '7.1'
 install:
   - composer update
-script: ./vendor/bin/phpunit ./tests
+script: composer test
 sudo: false
-
diff --git a/Makefile b/Makefile
index 7604f66c..eb9d48f0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,57 +1,21 @@
-COMPOSER_BIN = ./vendor/bin
-
-.PHONY: default test doc phpcs phpmd check install-devtool copyright release
+.PHONY: default test doc phpcs phpmd check install-devtool copyright release clean install reinstall
 
 default: check
 
 test:
-	$(COMPOSER_BIN)/phpunit ./tests
+	composer test
 
 doc:
-	yes yes | $(COMPOSER_BIN)/apigen generate --source=./src --destination=./docs --title line-bot-sdk-php
+	composer doc
 
 phpcs:
-	$(COMPOSER_BIN)/phpcs --standard=PSR2 src/ tests/ examples/EchoBot/src examples/EchoBot/public examples/KitchenSink/src examples/KitchenSink/public
+	composer cs
 
 phpmd:
-	$(COMPOSER_BIN)/phpmd ./src text cleancode,codesize,controversial,design,unusedcode,naming | \
-		grep -v 'Avoid using static access to class' | \
-		grep -v 'Avoid variables with short names like' | \
-		grep -v 'Avoid excessively long variable names like' | \
-		grep -v 'The method register uses an else expression' | \
-		grep -v 'The method sendRequest uses an else expression' | \
-		cat
-	$(COMPOSER_BIN)/phpmd ./examples/EchoBot/src text cleancode,codesize,controversial,design,unusedcode,naming | \
-		grep -v 'Avoid using static access to class' | \
-		grep -v 'Avoid variables with short names like' | \
-		grep -v 'Avoid excessively long variable names like' | \
-		grep -v 'The method register uses an else expression' | \
-		grep -v 'The method sendRequest uses an else expression' | \
-		cat
-	$(COMPOSER_BIN)/phpmd ./examples/EchoBot/public text cleancode,codesize,controversial,design,unusedcode,naming | \
-		grep -v 'Avoid using static access to class' | \
-		grep -v 'Avoid variables with short names like' | \
-		grep -v 'Avoid excessively long variable names like' | \
-		grep -v 'The method register uses an else expression' | \
-		grep -v 'The method sendRequest uses an else expression' | \
-		cat
-	$(COMPOSER_BIN)/phpmd ./examples/KitchenSink/src text cleancode,codesize,controversial,design,unusedcode,naming | \
-		grep -v 'Avoid using static access to class' | \
-		grep -v 'Avoid variables with short names like' | \
-		grep -v 'Avoid excessively long variable names like' | \
-		grep -v 'The method register uses an else expression' | \
-		grep -v 'The method sendRequest uses an else expression' | \
-		cat
-	$(COMPOSER_BIN)/phpmd ./examples/KitchenSink/public text cleancode,codesize,controversial,design,unusedcode,naming | \
-		grep -v 'Avoid using static access to class' | \
-		grep -v 'Avoid variables with short names like' | \
-		grep -v 'Avoid excessively long variable names like' | \
-		grep -v 'The method register uses an else expression' | \
-		grep -v 'The method sendRequest uses an else expression' | \
-		cat
+	composer md
 
 copyright:
-	bash ./devtool/check_copyright.sh
+	devtool/check_copyright.sh
 
 check: test copyright phpcs phpmd
 
@@ -68,3 +32,10 @@ endif
 	git tag $(VERSION)
 	git push origin $(VERSION)
 
+clean:
+	rm -rf vendor composer.lock
+
+install:
+	composer install
+
+reinstall: clean install
diff --git a/composer.json b/composer.json
index 12cb23fd..cfb13c37 100644
--- a/composer.json
+++ b/composer.json
@@ -38,5 +38,11 @@
     "psr-4": {
       "LINE\\Tests\\": "tests/"
     }
+  },
+  "scripts": {
+    "test": "phpunit tests",
+    "doc": "apigen generate --source=src --destination=docs --title line-bot-sdk-php",
+    "cs": "phpcs --standard=PSR2 src tests examples/EchoBot/src examples/EchoBot/public examples/KitchenSink/src examples/KitchenSink/public",
+    "md": "phpmd --ignore-violations-on-exit src,examples/EchoBot/src,examples/EchoBot/public,examples/KitchenSink/src,examples/KitchenSink/public text phpmd.xml"
   }
 }
diff --git a/devtool/check_copyright.sh b/devtool/check_copyright.sh
old mode 100644
new mode 100755
diff --git a/phpmd.xml b/phpmd.xml
new file mode 100644
index 00000000..4f56ca49
--- /dev/null
+++ b/phpmd.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0"?>
+<ruleset name="My first PHPMD rule set" xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0http://pmd.sf.net/ruleset_xml_schema.xsd"
+         xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd">
+
+    <description>line-bot-sdk-php phpmd custom rules</description>
+
+    <exclude-pattern>KitchenSink/Route.php</exclude-pattern>
+
+    <rule ref="rulesets/cleancode.xml">
+        <exclude name="ElseExpression" />
+        <exclude name="StaticAccess" />
+    </rule>
+
+    <rule ref="rulesets/codesize.xml" />
+
+    <rule ref="rulesets/controversial.xml">
+        <exclude name="Superglobals" />
+    </rule>
+
+    <rule ref="rulesets/design.xml" />
+    <rule ref="rulesets/unusedcode.xml" />
+
+    <rule ref="rulesets/naming.xml">
+        <exclude name="ShortVariable" />
+        <exclude name="LongVariable" />
+    </rule>
+</ruleset>