diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 9dce6c49..a35ef469 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -10,6 +10,7 @@ This closes # ???
 ## ☑️ ToDos
 <!-- Add your own todos here -->
 * [ ] 📝 Changelog entry
+* [ ] 📝 `Compatibility` label is updated or copied from previous entry
 * [ ] 🚦 Tests
 * [ ] 📝 Public documentation PR created or is not necessary
 * [ ] 💥 `Breaking` label has been applied or is not necessary
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90594ab3..6d86bc73 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 2.3.1 Release notes (2018-3-16)
 =============================================================
+### Compatibility
+* Sync protocol: 24
+* Server-side history format: 4
+* File format: 7
+* Realm Object Server: 3.0.0-alpha.8
+
 ### Breaking changes
 * None.