diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e774c4dff3..537fa3f0ae0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ ENHANCEMENTS:
 BUG FIXES:
 
 * data-source/aws_subnet: Set `tags` from the `DescribeSubnets` response, removing the need for the `ec2:DescribeTags` IAM permission ([#40144](https://github.com/hashicorp/terraform-provider-aws/issues/40144))
+* resource/aws_cognito_user_pool: Fix crash when hashing nil `schema` element ([#40195](https://github.com/hashicorp/terraform-provider-aws/issues/40195))
 * resource/aws_eks_addon: Fix crash when `pod_identity_association` is modified ([#40168](https://github.com/hashicorp/terraform-provider-aws/issues/40168))
 * resource/aws_eks_addon: Fix to prevent persistent differences when `pod_identity_association` is changed ([#40168](https://github.com/hashicorp/terraform-provider-aws/issues/40168))