diff --git a/telemetry/definitions/commonDefinitions.json b/telemetry/definitions/commonDefinitions.json
index 84480b20..c7e58e62 100644
--- a/telemetry/definitions/commonDefinitions.json
+++ b/telemetry/definitions/commonDefinitions.json
@@ -522,6 +522,11 @@
             "type": "string",
             "description": "The currently selected customization arn(None if using the base model)"
         },
+        {
+            "name": "codewhispererFeatureEvaluations",
+            "type": "string",
+            "description": "Feature assignments for a particular user"
+        },
         {
             "name": "codewhispererLanguage",
             "type": "string",
@@ -3070,6 +3075,10 @@
                 {
                     "type": "codewhispererCustomizationArn",
                     "required": false
+                },
+                {
+                    "type": "codewhispererFeatureEvaluations",
+                    "required": false
                 }
             ]
         },