[CentOS] OpenSSL Update - not a security update???

This command output is odd:

yum update --security
...
No packages needed for security; 118 packages available


However, this command says there's an OpenSSL update:

yum update openssl
...
---> Package openssl-libs.x86_64 1:1.0.1e-51.el7_2.2 will be updated
---> Package openssl-libs.x86_64 1:1.0.1e-51.el7_2.4 will be an update


Why does yum not consider this CESA a security update?


Perplexed,
ak.