Lock listen version on Ruby 1.9
Lock listen version on Ruby 1.9

vraravam/activeadmin,senid231/activeadmin,cmunozgar/activeadmin,mateusg/active_admin,waymondo/active_admin,mrjman/activeadmin,varyonic/activeadmin,maysam/activeadmin,waymondo/active_admin,Ibotta/activeadmin,siutin/activeadmin,deivid-rodriguez/activeadmin,mateusg/active_admin,mauriciopasquier/active_admin,vytenis-s/activeadmin,cmunozgar/activeadmin,quikly/active_admin,siutin/activeadmin,whatcould/active_admin,gogovan/activeadmin,quikly/active_admin,wspurgin/activeadmin,siutin/activeadmin,javierjulio/activeadmin,javierjulio/activeadmin,senid231/activeadmin,mrjman/activeadmin,vraravam/activeadmin,wspurgin/activeadmin,waymondo/active_admin,Ibotta/activeadmin,gogovan/activeadmin,SoftSwiss/active_admin,mateusg/active_admin,cmunozgar/activeadmin,activeadmin/activeadmin,gogovan/activeadmin,vytenis-s/activeadmin,SoftSwiss/active_admin,varyonic/activeadmin,whatcould/active_admin,maysam/activeadmin,vytenis-s/activeadmin,maysam/activeadmin,SoftSwiss/active_admin,wspurgin/activeadmin,javierjulio/activeadmin,activeadmin/activeadmin,whatcould/active_admin,mauriciopasquier/active_admin,quikly/active_admin,deivid-rodriguez/activeadmin,senid231/activeadmin,vraravam/activeadmin,mrjman/activeadmin,Ibotta/activeadmin,mauriciopasquier/active_admin,deivid-rodriguez/activeadmin,varyonic/activeadmin,activeadmin/activeadmin