diff --git a/README.md b/README.md
index 7036740..2725505 100644
--- a/README.md
+++ b/README.md
@@ -57,3 +57,6 @@ not marked "unwanted" as well. Failing to consider transitive dependencies will
 lead to broken dependencies of generated `rust-foo+bar-devel` packages and / or
 errors when generating spec files with rust2rpm.
 
+## Testing
+
+Use `python -m pytest -v` or `PYTHONPATH=. pytest -v` in the source tree.