diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5b06e6ca5..d91ed2b9a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -39,6 +39,8 @@ IMPROVEMENTS:
       option to ignore TLS cert verification. [GH-2214]
   * core: S3 remote state now accepts the 'encrypt' option for SSE [GH-2405]
   * core: `plan` now reports sum of resources to be changed/created/destroyed [GH-2458]
+  * core: Change string list representation so we can distinguish empty, single
+      element lists [GH-2504]
   * provider/aws: AutoScaling groups now support updating Load Balancers without
       recreation [GH-2472]
   * provider/aws: Allow more in-place updates for ElastiCache cluster without recreating