diff --git a/bin/pungi-koji b/bin/pungi-koji
index 42dcb424..fcd1477e 100755
--- a/bin/pungi-koji
+++ b/bin/pungi-koji
@@ -218,7 +218,13 @@ def main():
         kobo.log.add_stderr_logger(logger)
 
     conf = kobo.conf.PyConfigParser()
-    conf.load_from_file(opts.config)
+    if opts.config.endswith(".json"):
+        with open(opts.config) as f:
+            conf.load_from_dict(json.load(f))
+        conf.opened_files = [opts.config]
+        conf._open_file = opts.config
+    else:
+        conf.load_from_file(opts.config)
 
     compose_type = opts.compose_type or conf.get('compose_type', 'production')
     if compose_type == "production" and not opts.label and not opts.no_label: