diff --git a/AUTHORS.rst b/AUTHORS.rst
index 67a818ba..2636fa6c 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -142,3 +142,4 @@ Patches and Suggestions
 - Can Ibanoglu <can.ibanoglu@gmail.com> @canibanoglu
 - Thomas Weißschuh <thomas@t-8ch.de> @t-8ch
 - Jayson Vantuyl <jayson@aggressive.ly> @kagato
+- Pengfei.X <pengphy@gmail.com>
diff --git a/Makefile b/Makefile
index 9251923c..b3152823 100644
--- a/Makefile
+++ b/Makefile
@@ -4,6 +4,9 @@ init:
 test:
 	py.test
 
+coverage:
+	py.test --verbose --cov-report term --cov=requests test_requests.py
+
 ci: init
 	py.test --junitxml=junit.xml
 
diff --git a/requirements.txt b/requirements.txt
index 2bedd65e..5616d2fe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 py==1.4.12
 pytest==2.3.4
+pytest-cov==1.6
 invoke==0.2.0
 wheel