diff --git a/packages/asset-swapper/CHANGELOG.json b/packages/asset-swapper/CHANGELOG.json
index c49d964c30..7b155543fc 100644
--- a/packages/asset-swapper/CHANGELOG.json
+++ b/packages/asset-swapper/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "version": "16.56.0",
+        "changes": [
+            {
+                "note": "Add estimatedGas to ExtendedQuoteReport",
+                "pr": 463
+            }
+        ]
+    },
     {
         "version": "16.55.0",
         "changes": [
diff --git a/packages/asset-swapper/src/utils/quote_report_generator.ts b/packages/asset-swapper/src/utils/quote_report_generator.ts
index 975a834ad6..10236b797f 100644
--- a/packages/asset-swapper/src/utils/quote_report_generator.ts
+++ b/packages/asset-swapper/src/utils/quote_report_generator.ts
@@ -107,6 +107,7 @@ export interface ExtendedQuoteReport {
     sourcesConsidered: ExtendedQuoteReportIndexedEntryOutbound[];
     sourcesDelivered: ExtendedQuoteReportIndexedEntryOutbound[] | undefined;
     blockNumber: number | undefined;
+    estimatedGas: string;
 }
 
 export interface PriceComparisonsReport {