diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c90c08ea..1c095309 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -131,3 +131,7 @@ Before you submit a pull request, check that it meets these guidelines:
 
 2. If the pull request adds functionality, the docs should be updated.
    Put your new functionality into a function with a docstring, and add the feature to the list in `README.md`.
+
+3. If making contributions to multiple toolkits (i.e. Google and Slack, etc.), submit a separate pull request for each.
+   This helps us segregate the changes during the review process making it more efficient.
+