diff --git a/CHANGELOG.md b/CHANGELOG.md
index 436afa60b7e..37ebc0e927a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ BUG FIXES:
 
 * resource/aws_api_gateway_vpc_link: Ensure `target_arns` is properly read [GH-3569]
 * resource/aws_spot_instance_request: Retry for 1 minute instead of 15 seconds for IAM eventual consistency [GH-3561]
+* resource/aws_ssm_activation: Prevent crash with expiration_date [GH-3597]
 
 ## 1.10.0 (February 24, 2018)