diff --git a/library/gitlab_runner.py b/library/gitlab_runner.py
index 630e366..f3b4eeb 100644
--- a/library/gitlab_runner.py
+++ b/library/gitlab_runner.py
@@ -14,9 +14,14 @@ class GitlabRunner:
       if v is False:
         opts.append('--%s=false' % k)
       else:
-        opts.append('--%s' % k)
-        if v is not True:
-          opts.append(str(v))
+        if isinstance(v, list):
+          for av in v:
+            opts.append('--%s' % k)
+            opts.append(str(av))
+        else:
+          opts.append('--%s' % k)
+          if v is not True:
+            opts.append(str(v))
 
     subprocess.check_call(['gitlab-runner', 'register',
       '--non-interactive',