diff --git a/dcache/build.gradle.kts b/dcache/build.gradle.kts
index f3ad864..3028221 100755
--- a/dcache/build.gradle.kts
+++ b/dcache/build.gradle.kts
@@ -51,7 +51,7 @@ afterEvaluate {
                 from(components["release"])
                 groupId = "com.github.dora4"
                 artifactId = "dcache-android"
-                version = "3.1.4"
+                version = "3.1.5"
             }
         }
     }
diff --git a/dcache/src/main/java/dora/db/Orm.kt b/dcache/src/main/java/dora/db/Orm.kt
index fae9d96..a892ef5 100755
--- a/dcache/src/main/java/dora/db/Orm.kt
+++ b/dcache/src/main/java/dora/db/Orm.kt
@@ -42,7 +42,10 @@ object Orm {
     private fun prepare(helper: OrmSQLiteOpenHelper) {
         dbHelper = helper
         database = helper.writableDatabase
-        dbState = STATE_DATABASE_EXISTS
+        database?.let {
+            helper.onCreate(it)
+            dbState = STATE_DATABASE_EXISTS
+        }
     }
 
     private fun prepare(