diff --git a/source/src/main/java/one/nem/lacerta/source/database/entity/Document.java b/source/src/main/java/one/nem/lacerta/source/database/entity/Document.java
index 7e6b0017..f007f434 100644
--- a/source/src/main/java/one/nem/lacerta/source/database/entity/Document.java
+++ b/source/src/main/java/one/nem/lacerta/source/database/entity/Document.java
@@ -1,20 +1,27 @@
 package one.nem.lacerta.source.database.entity;
 
+import androidx.room.ColumnInfo;
 import androidx.room.Entity;
 import androidx.room.PrimaryKey;
 
 @Entity(tableName = "document")
 public class Document {
     @PrimaryKey
+    @ColumnInfo(name = "id")
     public String id; // ドキュメントID
 
+    @ColumnInfo(name = "title")
     public String title; // タイトル
 
+    @ColumnInfo(name = "created_at")
     public String createdAt; // 作成日時
 
+    @ColumnInfo(name = "updated_at")
     public String updatedAt; // 更新日時
 
+    @ColumnInfo(name = "author")
     public String author; // 作成者
 
+    @ColumnInfo(name = "default_branch")
     public String defaultBranch; // デフォルトブランチ
 }