diff --git a/objects/sigmf-expanded-recording/definition.json b/objects/sigmf-expanded-recording/definition.json
index ae50d7c..d852864 100644
--- a/objects/sigmf-expanded-recording/definition.json
+++ b/objects/sigmf-expanded-recording/definition.json
@@ -36,6 +36,13 @@
       "misp-attribute": "text",
       "ui-priority": 0
     },
+    "fft-plot": {
+      "description": "FFT plot of the signal",
+      "disable_correlation": true,
+      "misp-attribute": "attachment",
+      "multiple": true,
+      "ui-priority": 0
+    },
     "geolocation_alt": {
       "description": "The location of the Recording system (altitude).",
       "disable_correlation": true,
@@ -126,6 +133,13 @@
       "disable_correlation": true,
       "misp-attribute": "text",
       "ui-priority": 0
+    },
+    "waterfall-plot": {
+      "description": "Waterfall plot of the signal",
+      "disable_correlation": true,
+      "misp-attribute": "attachment",
+      "multiple": true,
+      "ui-priority": 0
     }
   },
   "description": "An object representing a single IQ/RF sample in the Signal Metadata Format Specification (SigMF)",