diff --git a/layer.yaml b/layer.yaml
index 63deff2..63e43d5 100644
--- a/layer.yaml
+++ b/layer.yaml
@@ -3,6 +3,9 @@ includes:
  - 'layer:apt'
  - 'interface:php-fpm-stats'
  - 'interface:nginx-stats'
+ - 'interface:redis-stats'
+ - 'interface:elasticsearch-stats'
+ - 'interface:postgresql-stats'
 options:
   basic:
     packages:
diff --git a/metadata.yaml b/metadata.yaml
index c88f5f0..8e9bb98 100644
--- a/metadata.yaml
+++ b/metadata.yaml
@@ -13,6 +13,15 @@ series:
   - trusty
 subordinate: true
 requires:
+  redis:
+    interface: redis-stats
+    scope: container
+  postgresql:
+    interface: postgresql-stats
+    scope: container
+  elasticsearch:
+    interface: elasticsearch-stats
+    scope: container
   php-fpm:
     interface: php-fpm-stats
     scope: container