diff --git a/snapshot/snapshot_base.go b/snapshot/snapshot_base.go
index 79d3cf6..4a14f2e 100644
--- a/snapshot/snapshot_base.go
+++ b/snapshot/snapshot_base.go
@@ -114,6 +114,8 @@
 	RelativeInstallPath string `json:",omitempty"`
 	Filename            string `json:",omitempty"`
 	ModuleStemName      string `json:",omitempty"`
+	RustProcMacro       bool   `json:",omitempty"`
+	CrateName           string `json:",omitempty"`
 
 	// dependencies
 	Required []string `json:",omitempty"`