diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 7806eda..2d1d609 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -15,3 +15,14 @@ make clean
 # list all make commands
 make help
 ```
+## Testing
+
+SIPNET also uses `make` to build and run its unit tests. This can be done with the following commands:
+```shell
+# Compile tests
+make test
+# Run tests
+make testrun
+# Clean after tests are run
+make testclean
+```