diff --git a/metadata.json b/metadata.json
index 1070f59..15620d3 100644
--- a/metadata.json
+++ b/metadata.json
@@ -23,6 +23,10 @@
       "name": "puppetlabs/stdlib",
       "version_requirement": ">= 7.1.0 < 9.0.0"
     }
+    {
+      "name": "puppetlabs/concat",
+      "version_requirement": ">= 7.1.0 < 9.0.0"
+    }
   ],
   "operatingsystem_support": [
     {