diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6502cd1625a..491b4b85ae6d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ BUG FIXES:
 
 * data-source/aws_rds_cluster: Prevent error setting `engine_mode` and `scaling_configuration` [GH-5660]
 * resource/aws_dax_cluster: Properly recreate cluster when updating `server_side_encryption` [GH-5664]
+* resource/aws_lambda_event_source_mapping: Prevent perpetual difference when using function name with `function_name` (argument accepts both name and ARN) [GH-5454]
 * resource/aws_ssm_document: Properly handle deletion of privately shared documents [GH-5668]
 * resource/aws_ssm_document: Properly update `permissions.account_ids` [GH-5685]