Upgrade Couchbaseserver3.0 to 4.5

We are trying to upgrade our couchbase server from 3.0 to 4.5. When we run the upgrade command we are receiving the following error.

rpm -U /couchbase-server-community-4.5.0-centos6.x86_64.rpm
error: Failed dependencies:
couchbase-server conflicts with couchbase-server-community-4.5.0-2601.x86_64

Any help on this is appreciated.