diff --git a/scripts/arcanist.php b/scripts/arcanist.php
index 47284178..62636953 100755
--- a/scripts/arcanist.php
+++ b/scripts/arcanist.php
@@ -244,6 +244,7 @@ try {
           'clientDescription' => php_uname('n').':'.$description,
           'user'              => $user_name,
           'certificate'       => $certificate,
+          'host'              => $conduit_uri,
         ));
     } catch (ConduitClientException $ex) {
       if ($ex->getErrorCode() == 'ERR-NO-CERTIFICATE' ||
diff --git a/src/workflow/install-certificate/ArcanistInstallCertificateWorkflow.php b/src/workflow/install-certificate/ArcanistInstallCertificateWorkflow.php
index e9cfe5c3..14c4128e 100644
--- a/src/workflow/install-certificate/ArcanistInstallCertificateWorkflow.php
+++ b/src/workflow/install-certificate/ArcanistInstallCertificateWorkflow.php
@@ -101,6 +101,7 @@ EOTEXT
       'conduit.getcertificate',
       array(
         'token' => $token,
+        'host'  => $uri,
       ));
 
     $user = $info['username'];