On CentOS 6.5x64 using 9.5 pg repo and epel, I hit an error with pgbouncer looking for libevent.
I know pgbouncer installed without issues for me on 9.4
[root@pg95 ~]# yum install pgbouncer Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.lug.udel.edu * epel: mirror.symnds.com * extras: centos.mirror.nac.net * updates: mirror.atlanticmetro.net Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package pgbouncer.x86_64 0:1.6.1-1.rhel6 will be installed --> Processing Dependency: libevent-2.0.so.5()(64bit) for package: pgbouncer-1.6.1-1.rhel6.x86_64 --> Finished Dependency Resolution Error: Package: pgbouncer-1.6.1-1.rhel6.x86_64 (pgdg95) Requires: libevent-2.0.so.5()(64bit) You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest [root@pg95 ~]#