diff --git a/reference/v4.json b/reference/v4.json
index e122877..c6fa85e 100644
--- a/reference/v4.json
+++ b/reference/v4.json
@@ -126,6 +126,11 @@
       "type": "number",
       "doc": "The maximum zoom level on which the layer gets parsed and appears on."
     },
+    "interactive": {
+      "type": "boolean",
+      "doc": "Enable querying of feature data from this layer for interactivity.",
+      "default": false
+    },
     "render": {
       "type": "render",
       "doc": "Symbolizer type that should be used to visualize this layer. If unspecified or null, this layer is not treated as a symbolizer and only exists to have properties inherited to other layers using ref."