diff --git a/config/ext.json b/config/ext.json
index b839a693..3134ab7b 100644
--- a/config/ext.json
+++ b/config/ext.json
@@ -81,6 +81,7 @@
         "lib-depends": [
             "libmpdec"
         ]
+    },
     "deepclone": {
         "type": "external",
         "source": "deepclone",