diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 44c93dd42..e495d19ce 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -249,7 +249,10 @@ Merge Strategy
 
 The preferred method for merging pull requests is squash merging to keep the
 commit history trim, but it is up to the discretion of the team member merging
-the change. When stacking pull requests, you may wish to do the following:
+the change. We do not support rebase merges due to `allchange` being unable to
+handle them. When merging make sure to leave the default commit title, or 
+at least leave the PR number at the end in brackets like by default.
+When stacking pull requests, you may wish to do the following:
 
 1. Branch from develop to your branch (branch1), push commits onto it and open a pull request
 2. Branch from your base branch (branch1) to your work branch (branch2), push commits and open a pull request configuring the base to be branch1, saying in the description that it is based on your other PR.