diff --git a/store/ulid.go b/service/ulid.go
similarity index 96%
rename from store/ulid.go
rename to service/ulid.go
index 8d54801..42cfd01 100644
--- a/store/ulid.go
+++ b/service/ulid.go
@@ -1,4 +1,4 @@
-package store
+package service
 
 import "github.com/oklog/ulid/v2"