diff --git a/metadata.json b/metadata.json
index 2a41d55..89535fa 100644
--- a/metadata.json
+++ b/metadata.json
@@ -33,7 +33,7 @@
   "dependencies": [
     {
       "name": "puppetlabs/concat",
-      "version_requirement": ">= 1.2.1 < 8.0.0"
+      "version_requirement": ">= 1.2.1 < 10.0.0"
     },
     {
       "name": "puppetlabs/stdlib",