diff --git a/.gitignore b/.gitignore
index 0727b2f..30f7358 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@ build/
 dist/
 *.egg/
 .coverage
+htmlcov/
 *.egg-info/
 pytestdebug.log
 
diff --git a/tox.ini b/tox.ini
index e4a4274..a55904b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,12 +11,13 @@ deps = flake8
 
 [testenv]
 commands =
-    ./runtests.sh {posargs}
+    ./runtests.sh --cov={envsitepackagesdir}/vcr --cov-branch {posargs}
 deps =
     Flask
     mock
     pytest
     pytest-httpbin
+    pytest-cov
     PyYAML
     ipaddress
     requests: requests>=2.22.0