diff --git a/testing/raptor/raptor/results.py b/testing/raptor/raptor/results.py
index 1fc8377079e8..8ea9516f0c1c 100644
--- a/testing/raptor/raptor/results.py
+++ b/testing/raptor/raptor/results.py
@@ -444,7 +444,17 @@ class BrowsertimeResultsHandler(PerftestResultsHandler):
                   "max": 864
                 },
               }
-            }
+            },
+            "geckoPerfStats": [
+              {
+                "Compositing": 71,
+                "MajorGC": 144
+              },
+              {
+                "Compositing": 13,
+                "MajorGC": 126
+              }
+            ]
           }
         ]