diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3f51aa523b27b..6bfd30a6ff6e1 100644
--- a/CONTRIBUTING.md
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@@ -179,3 +179,4 @@ We have a lot of mechanisms to help expedite towards an accepted PR. Here are so
 7. *Test, test, test*: pretty self explanatory ([OpenSearchTestCase](./test/framework/src/main/java/org/opensearch/test/OpenSearchTestCase.java) for unit tests, [OpenSearchIntegTestCase](./test/framework/src/main/java/org/opensearch/test/OpenSearchIntegTestCase.java) for integration & cluster tests, [OpenSearchRestTestCase](./test/framework/src/main/java/org/opensearch/test/rest/OpenSearchRestTestCase.java) for testing REST endpoint interfaces, and yaml tests with [ClientYamlTestSuiteIT](./rest-api-spec/src/yamlRestTest/java/org/opensearch/test/rest/ClientYamlTestSuiteIT.java) for REST integration tests)
 
 In general, the more guardrails you add to your change, the higher the chance your PR will be merged quickly. We can always relax these guard rails in smaller followup PRs. Reverting a GA feature is much more difficult. Check out the [DEVELOPER_GUIDE](./DEVELOPER_GUIDE.md#submitting-changes) for more useful tips.
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