diff --git a/api/query_builder.go b/api/query_builder.go
index 1719f4dac..4d7d27d11 100644
--- a/api/query_builder.go
+++ b/api/query_builder.go
@@ -231,6 +231,7 @@ var PullRequestFields = append(IssueFields,
 	"deletions",
 	"files",
 	"headRefName",
+	"headRefOid",
 	"headRepository",
 	"headRepositoryOwner",
 	"isCrossRepository",