diff --git a/glicid/services/parallel.scm b/glicid/services/parallel.scm
index f2d2bde..10074b5 100644
--- a/glicid/services/parallel.scm
+++ b/glicid/services/parallel.scm
@@ -37,6 +37,7 @@
                      (munge munge-configuration-munge (default munge))
                      (key-file munged-key-file (default (file-append munge "/etc/munge/munged.key")))
                      (socket-path socket-path (default "/var/run/munge/munge.socket.2"))
+                     (threads numthreads (default 2))
                      (log-file munged-log-file (default "/var/log/munged.log")))
 
 (define munged-service
@@ -49,7 +50,8 @@
                              (start #~(make-forkexec-constructor (list #$(file-append munge "/sbin/munged")
                                                                        "-F" "-f" "-M"
                                                                        "-S" #$socket-path
-                                                                       "--key-file" #$key-file)
+                                                                       "--key-file" #$key-file
+                                                                       "--num-threads" threads)
                                                                  #:log-file #$log-file))
                              (stop #~(make-kill-destructor)))))))