diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c56f52..bc26253 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ## check_patroni 2.0.0 - 2024-04-09
 
+### Notice
+
+While fixing `cluster_has_replica`, the definition of a healthy replica was
+changed. It's more restrictive now, hence the jump from v1 to v2.
+
 ### Changed
 
 * In `cluster_node_count`, a healthy standby, sync replica or standby leaders cannot be "in