diff --git a/z/entry.go b/z/entry.go
index c0799c4..a5f4f4b 100644
--- a/z/entry.go
+++ b/z/entry.go
@@ -15,6 +15,8 @@ type Entry struct {
   Project string      `json:"project,omitempty"`
   Task    string      `json:"task,omitempty"`
   User    string      `json:"user,omitempty"`
+
+  SHA1    string      `json:"-"`
 }
 
 func NewEntry(