diff --git a/metadata.json b/metadata.json
index 9ac40a19..3f5d4d6c 100644
--- a/metadata.json
+++ b/metadata.json
@@ -14,7 +14,7 @@
     },
     {
       "name": "puppetlabs/concat",
-      "version_requirement": ">= 1.2.5 < 6.0.0"
+      "version_requirement": ">= 1.2.5 < 7.0.0"
     }
   ],
   "tags": [