diff --git a/src/main/resources/update/gitbucket-core_4.12.xml b/src/main/resources/update/gitbucket-core_4.12.xml
index 1f4b6d9..df5e463 100644
--- a/src/main/resources/update/gitbucket-core_4.12.xml
+++ b/src/main/resources/update/gitbucket-core_4.12.xml
@@ -3,7 +3,7 @@
   <createTable tableName="RELEASE">
     <column name="USER_NAME" type="varchar(100)" nullable="false"/>
     <column name="REPOSITORY_NAME" type="varchar(100)" nullable="false"/>
-    <column name="RELEASE_ID" type="int" nullable="false"/>
+    <column name="RELEASE_ID" type="int" nullable="false" autoIncrement="true" unique="true"/>
     <column name="NAME" type="varchar(100)" nullable="false"/>
     <column name="TAG" type="varchar(100)" nullable="false"/>
     <column name="AUTHOR" type="varchar(100)" nullable="false"/>
@@ -18,15 +18,6 @@
   <addUniqueConstraint constraintName="IDX_RELEASE_UNIQ" tableName="RELEASE" columnNames="USER_NAME, REPOSITORY_NAME, TAG"/>
   <addForeignKeyConstraint constraintName="IDX_RELEASE_FK0" baseTableName="RELEASE" baseColumnNames="USER_NAME, REPOSITORY_NAME" referencedTableName="REPOSITORY" referencedColumnNames="USER_NAME, REPOSITORY_NAME"/>
 
-  <createTable tableName="RELEASE_ID">
-    <column name="USER_NAME" type="varchar(100)" nullable="false"/>
-    <column name="REPOSITORY_NAME" type="varchar(100)" nullable="false"/>
-    <column name="RELEASE_ID" type="int" nullable="false"/>
-  </createTable>
-
-  <addPrimaryKey constraintName="IDX_RELEASE_ID_PK" tableName="RELEASE_ID" columnNames="USER_NAME, REPOSITORY_NAME"/>
-  <addForeignKeyConstraint constraintName="IDX_RELEASE_ID_FK1" baseTableName="RELEASE_ID" baseColumnNames="USER_NAME, REPOSITORY_NAME" referencedTableName="REPOSITORY" referencedColumnNames="USER_NAME, REPOSITORY_NAME"/>
-
   <createTable tableName="RELEASE_ASSET">
     <column name="USER_NAME" type="varchar(100)" nullable="false"/>
     <column name="REPOSITORY_NAME" type="varchar(100)" nullable="false"/>
diff --git a/src/main/scala/gitbucket/core/model/Release.scala b/src/main/scala/gitbucket/core/model/Release.scala
index 3d3b02f..a46afff 100644
--- a/src/main/scala/gitbucket/core/model/Release.scala
+++ b/src/main/scala/gitbucket/core/model/Release.scala
@@ -6,15 +6,8 @@
   import profile.api._
   import self._
 
-  lazy val ReleaseId = TableQuery[ReleaseId]
   lazy val Releases = TableQuery[Releases]
 
-  class ReleaseId(tag: Tag) extends Table[(String, String, Int)](tag, "RELEASE_ID") with ReleaseTemplate {
-    def * = (userName, repositoryName, releaseId)
-
-    def byPrimaryKey(owner: String, repository: String) = byRepository(owner, repository)
-  }
-
   class Releases(tag_ : Tag) extends Table[Release](tag_, "RELEASE") with ReleaseTemplate {
     val name = column[String]("NAME")
     val tag = column[String]("TAG")
diff --git a/src/main/scala/gitbucket/core/service/ReleaseService.scala b/src/main/scala/gitbucket/core/service/ReleaseService.scala
index dae1eec..f70c1c0 100644
--- a/src/main/scala/gitbucket/core/service/ReleaseService.scala
+++ b/src/main/scala/gitbucket/core/service/ReleaseService.scala
@@ -55,10 +55,19 @@
 
   def createRelease(repository: RepositoryInfo, name: String, content:Option[String], tag: String,
     isDraft: Boolean, isPrerelease: Boolean, loginAccount: Account)(implicit context: Context, s: Session): Release = {
-    val releaseId = insertRelease(repository.owner, repository.name, loginAccount.userName, name, tag,
-    content, isDraft, isPrerelease)
-    val release = getRelease(repository.owner, repository.name, releaseId.toString).get
-    release
+    Releases insert Release(
+      userName = repository.owner,
+      repositoryName = repository.name,
+      name = name,
+      tag = tag,
+      author = loginAccount.userName,
+      content = content,
+      isDraft = isDraft,
+      isPrerelease = isPrerelease,
+      registeredDate = currentDate,
+      updatedDate = currentDate
+    )
+    getReleaseByTag(repository.owner, repository.name, tag).get
   }
 
   def getReleases(owner: String, repository: String)(implicit s: Session): List[Release] = {
@@ -69,6 +78,10 @@
     Releases filter (_.byPrimaryKey(owner, repository, releaseId)) firstOption
   }
 
+  def getReleaseByTag(owner: String, repository: String, tag: String)(implicit s: Session): Option[Release] = {
+    Releases filter (_.byTag(owner, repository, tag)) firstOption
+  }
+
   def getRelease(owner: String, repository: String, releaseId: String)(implicit s: Session): Option[Release] = {
     if (isInteger(releaseId))
       getRelease(owner, repository, releaseId.toInt)
@@ -80,38 +93,6 @@
     releases.map(rel => (rel.tag -> rel)).toMap
   }
 
-  def insertRelease(owner: String, repository: String, loginUser: String, name: String, tag: String,
-    content: Option[String], isDraft: Boolean, isPrerelease: Boolean)(implicit s: Session): Int = {
-    // next id number
-    val id = sql"SELECT RELEASE_ID + 1 FROM RELEASE_ID WHERE USER_NAME = $owner AND REPOSITORY_NAME = $repository FOR UPDATE".as[Int]
-      .firstOption.getOrElse(1)
-    Releases insert Release(
-      owner,
-      repository,
-      id,
-      name,
-      tag,
-      loginUser,
-      content,
-      isDraft,
-      isPrerelease,
-      currentDate,
-      currentDate
-    )
-
-    // increment issue id
-    if (id > 1){
-      ReleaseId
-        .filter(_.byPrimaryKey(owner, repository))
-        .map(_.releaseId)
-        .update(id) > 0
-    }else{
-      ReleaseId.insert(owner, repository, id)
-    }
-
-    id
-  }
-
   def updateRelease(owner: String, repository: String, releaseId: Int, title: String, content: Option[String])(implicit s: Session): Int = {
     Releases
       .filter (_.byPrimaryKey(owner, repository, releaseId))