diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000..abf7a32
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,10 @@
+[run]
+branch = true
+source = src/
+relative_files = true
+omit =
+    # Omit any test files
+    */*_test.py
+
+[xml]
+output = ./coverage.xml
diff --git a/devbox.json b/devbox.json
index 4acaad5..972fda5 100644
--- a/devbox.json
+++ b/devbox.json
@@ -17,7 +17,7 @@
         "pytest src/"
       ],
       "test-cov": [
-        "pytest src/ --cov=src/ --cov-report=xml"
+        "pytest --cov=src/ --cov-report=xml"
       ],
       "lint": [
         "flake8 src/"