diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 00000000..d4e48dcb
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,4 @@
+# Using relative is mandated by py-cov-action/python-coverage-comment-action@v3,
+# see https://github.com/py-cov-action/python-coverage-comment-action?tab=readme-ov-file#why-do-we-need-relative_files--true-
+[run]
+relative_files = true