diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 1f0aa4a4..04451473 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -58,11 +58,20 @@ To run the test suite, simply execute the following in the directory where you c
 test/run
 ```
 
-This command will ensure that the [Bats Test Framework](https://github.com/bats-core/bats-core) is available in a local directory (it's included as a Git submodule) and then run the test suite found in the [test](test) folder.
+This command will ensure that the [Bats Test Framework](https://github.com/bats-core/bats-core) is available in the local `test_lib` directory (Bats is included as a Git submodule) and then run the test suite found in the [test](test) folder.
 The test script will execute each test in turn, and will print a status for each test case.
 
 When adding new test cases, please take a look at the existing test cases for examples.
 
+The following libraries are used to help with the tests:
+
+* Test Framework: https://github.com/bats-core/bats-core
+* Support library for Bats-Assert: https://github.com/ztombol/bats-support
+* General `assert` functions: https://github.com/ztombol/bats-assert
+* File `assert` functions: https://github.com/ztombol/bats-file
+
+When verifying test results, please try to use the `assert` functions found in these libraries.
+
 ## Features
 
 * When adding new completions or plugins, please don't simply copy existing tools into the Bash-it codebase, try to load/integrate the tools instead.