diff --git a/db-migration-core/src/main/java/org/dbmigration/core/configuration/Configuration.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/configuration/Configuration.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/configuration/Configuration.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/configuration/Configuration.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/configuration/ConfigurationEntry.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/configuration/ConfigurationEntry.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/configuration/ConfigurationEntry.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/configuration/ConfigurationEntry.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/configuration/ConfigurationKeys.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/configuration/ConfigurationKeys.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/configuration/ConfigurationKeys.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/configuration/ConfigurationKeys.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/entity/DBMigrationSchemaHistory.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/entity/DBMigrationSchemaHistory.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/entity/DBMigrationSchemaHistory.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/entity/DBMigrationSchemaHistory.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/main/DBMigration.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/DBMigration.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/main/DBMigration.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/DBMigration.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/main/DBMigrationException.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/DBMigrationException.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/main/DBMigrationException.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/DBMigrationException.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/main/DBMigrationTarget.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/DBMigrationTarget.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/main/DBMigrationTarget.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/DBMigrationTarget.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/main/MigrationResult.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/MigrationResult.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/main/MigrationResult.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/MigrationResult.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/main/MigrationType.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/MigrationType.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/main/MigrationType.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/MigrationType.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/main/RepairResult.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/RepairResult.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/main/RepairResult.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/RepairResult.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/main/SqlMigration.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/SqlMigration.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/main/SqlMigration.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/main/SqlMigration.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/persistence/api/DBMigrationPersistence.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/persistence/api/DBMigrationPersistence.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/persistence/api/DBMigrationPersistence.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/persistence/api/DBMigrationPersistence.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/persistence/impl/base/DBMigrationPersistenceBase.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/persistence/impl/base/DBMigrationPersistenceBase.java
similarity index 99%
rename from db-migration-core/src/main/java/org/dbmigration/core/persistence/impl/base/DBMigrationPersistenceBase.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/persistence/impl/base/DBMigrationPersistenceBase.java
index f13b285..272fa3c 100644
--- a/db-migration-core/src/main/java/org/dbmigration/core/persistence/impl/base/DBMigrationPersistenceBase.java
+++ b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/persistence/impl/base/DBMigrationPersistenceBase.java
@@ -78,6 +78,7 @@ public abstract class DBMigrationPersistenceBase implements DBMigrationPersisten
 
         } catch (SQLException e) {
             LOG.error(e.getMessage());
+            throw new RuntimeException(e);
         }
         return conn;
     }
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/persistence/impl/sqlite/DBMigrationPersistenceSqliteImpl.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/persistence/impl/sqlite/DBMigrationPersistenceSqliteImpl.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/persistence/impl/sqlite/DBMigrationPersistenceSqliteImpl.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/persistence/impl/sqlite/DBMigrationPersistenceSqliteImpl.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/query/DBMigrationSchemaHistoryTable.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/query/DBMigrationSchemaHistoryTable.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/query/DBMigrationSchemaHistoryTable.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/query/DBMigrationSchemaHistoryTable.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/resources/FileSystemSqlFileProvider.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/FileSystemSqlFileProvider.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/resources/FileSystemSqlFileProvider.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/FileSystemSqlFileProvider.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/resources/ResourcesSqlFileProvider.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/ResourcesSqlFileProvider.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/resources/ResourcesSqlFileProvider.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/ResourcesSqlFileProvider.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/resources/SqlFile.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/SqlFile.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/resources/SqlFile.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/SqlFile.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/resources/SqlFileName.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/SqlFileName.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/resources/SqlFileName.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/SqlFileName.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/resources/SqlFileProvider.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/SqlFileProvider.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/resources/SqlFileProvider.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/SqlFileProvider.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/resources/SqlFileVersion.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/SqlFileVersion.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/resources/SqlFileVersion.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/resources/SqlFileVersion.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/utils/DBMigrationConstants.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/utils/DBMigrationConstants.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/utils/DBMigrationConstants.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/utils/DBMigrationConstants.java
diff --git a/db-migration-core/src/main/java/org/dbmigration/core/utils/DBMigrationUtils.java b/db-migration-core/src/main/java/org/nanoboot/dbmigration/core/utils/DBMigrationUtils.java
similarity index 100%
rename from db-migration-core/src/main/java/org/dbmigration/core/utils/DBMigrationUtils.java
rename to db-migration-core/src/main/java/org/nanoboot/dbmigration/core/utils/DBMigrationUtils.java
diff --git a/pom.xml b/pom.xml
index 6eb2810..55d712b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
-        <groupId>org.nanoboot.common</groupId>
+        <groupId>org.nanoboot.essential</groupId>
         <artifactId>nanoboot-parent</artifactId>
         <version>0.1.0-SNAPSHOT</version>
     </parent>
@@ -40,7 +40,7 @@
         <dbmigration.version>0.1.0-SNAPSHOT</dbmigration.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <checkstyle.skip>true</checkstyle.skip><!-- TODO: make false-->
-        <power.version>0.1.0-SNAPSHOT</power.version>
+        <power.version>2.0.0-SNAPSHOT</power.version>
     </properties>
     <modules>
         <module>db-migration-core</module>