diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 000000000..2116a46da
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,4 @@
+[run]
+omit =
+    .tox/*
+    tests/*
diff --git a/tox.ini b/tox.ini
index 0253858b4..ba8fb2b2c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -35,7 +35,7 @@ deps = pytest
 
 distdir = build
 commands =
-    {env:TOXBUILD:python -m pytest --junitxml=test-reports/junit-{envname}.xml --cov} {posargs}
+    {env:TOXBUILD:python -m pytest --junitxml=test-reports/junit-{envname}.xml --cov --cov-config=.coveragerc} {posargs}
 
 [testenv:clean]
 deps = coverage