diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000..3aca4eb
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,14 @@
+[run]
+branch = True
+source =
+    ocrd_calamari
+
+[report]
+exclude_lines =
+    if self.debug:
+    pragma: no cover
+    raise NotImplementedError
+    if __name__ == .__main__.:
+ignore_errors = True
+omit =
+    ocrd_calamari/cli.py