diff --git a/puppet/services/heat-engine.yaml b/puppet/services/heat-engine.yaml
index 55f9c5e17f..fe18185540 100644
--- a/puppet/services/heat-engine.yaml
+++ b/puppet/services/heat-engine.yaml
@@ -68,6 +68,10 @@ parameters:
     type: number
     default: 1000
     description: Maximum resources allowed per top-level stack. -1 stands for unlimited.
+  HeatEnginePluginDirs:
+    type: comma_delimited_list
+    default: []
+    description: An array of directories to search for plug-ins.
 
 conditions:
      heat_workers_unset: {equals : [{get_param: HeatWorkers}, 0]}
@@ -132,6 +136,7 @@ outputs:
                   passwords:
                     - {get_param: HeatAuthEncryptionKey}
                     - {get_param: [DefaultPasswords, heat_auth_encryption_key]}
+            heat::engine::plugin_dirs: {get_param: HeatEnginePluginDirs}
           -
             if:
             - heat_workers_unset