we are getting following error in the log for pull request build jobs.

Mar 29, 2015 6:55:29 AM org.jenkinsci.plugins.ghprb.GhprbGitHub connect
SEVERE: Can't connect to https://<github-enterprise-server>.com/api/v3 using oauth
Mar 29, 2015 6:55:29 AM org.jenkinsci.plugins.ghprb.GhprbRepository initGhRepository
SEVERE: Error while accessing rate limit API
javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:136)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:1720)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:954)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1138)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1165)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1149)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:434)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:166)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1172)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:234)
at org.kohsuke.github.Requester.parse(Requester.java:396)
at org.kohsuke.github.Requester._to(Requester.java:198)
at org.kohsuke.github.Requester.to(Requester.java:173)
at org.kohsuke.github.GitHub.getMyself(GitHub.java:256)
at org.kohsuke.github.GitHub.<init>(GitHub.java:133)
at org.kohsuke.github.GitHubBuilder.build(GitHubBuilder.java:173)
at org.jenkinsci.plugins.ghprb.GhprbGitHub.connect(GhprbGitHub.java:23)
at org.jenkinsci.plugins.ghprb.GhprbGitHub.get(GhprbGitHub.java:46)
at org.jenkinsci.plugins.ghprb.GhprbRepository.initGhRepository(GhprbRepository.java:53)
at org.jenkinsci.plugins.ghprb.GhprbRepository.check(GhprbRepository.java:76)
at org.jenkinsci.plugins.ghprb.Ghprb.run(Ghprb.java:101)
at org.jenkinsci.plugins.ghprb.GhprbTrigger.run(GhprbTrigger.java:149)
at hudson.triggers.Trigger.checkTriggers(Trigger.java:266)
at hudson.triggers.Trigger$Cron.doRun(Trigger.java:214)
at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:54)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

we are using GHE 2.1.3, jenkins version is 1.5.96.2, ghprb version is 1.16-8