diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index db88d766..ed4fd560 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -7,6 +7,6 @@ Please follow the next recommendations for your pull requests:
 - compile with *stable* rust
 - use `cargo fmt`
 - check the output of `cargo clippy --all-features --all --tests`
-- run tests `cargo test`
+- run tests `cargo test --lib -- --test-threads 1` and `cargo test --package casr`
 - if you have updated usage of any casr tool, you could simply run
   `update_usage.py` to change the `docs/usage.md` file properly
diff --git a/README.md b/README.md
index 52d8665f..746b66ee 100644
--- a/README.md
+++ b/README.md
@@ -220,7 +220,7 @@ Please follow the next recommendations for your pull requests:
 - compile with *stable* rust
 - use `cargo fmt`
 - check the output of `cargo clippy --all-features --all --tests`
-- run tests `cargo test`
+- run tests `cargo test --lib -- --test-threads 1` and `cargo test --package casr`
 - if you have updated usage of any casr tool, you could simply run
   `update_usage.py` to change the `docs/usage.md` file properly