diff --git a/requirements/requirements-testing.txt b/requirements/requirements-testing.txt
index a8d5d3229..6900028d3 100644
--- a/requirements/requirements-testing.txt
+++ b/requirements/requirements-testing.txt
@@ -1,3 +1,4 @@
 # PyTest for running the tests.
 pytest==2.6.4
 pytest-django==2.8.0
+pytest-cov==1.8.1
diff --git a/runtests.py b/runtests.py
index f795829b5..e99cc65ad 100755
--- a/runtests.py
+++ b/runtests.py
@@ -8,7 +8,7 @@ import sys
 import pytest
 
 PYTEST_ARGS = {
-    'default': ['tests', '--tb=short', '-s'],
+    'default': ['tests', '--tb=short', '-s', '--cov', 'rest_framework'],
     'fast': ['tests', '--tb=short', '-q', '-s'],
 }