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1. Check if your modules contain Vaadin implementations.
2. If they do:
   1. Obtain the Migration Tool for Converting Vaadin Framework 7 Projects to Vaadin Framework 8 from https://github.com/vaadin/framework8-migration-tool .
   2. While on the README at the URL, read how to install and use the tool and run it.
   3. The tool automatically changes the imports of the affected classes and thus – in the majority of cases – will make your module(s) compatible with Vaadin 8.
3. As stated in Migrating to Vaadin 8, some dependencies need to be added in order to use the compatible classes from Vaadin 7 (such as TextField).
   

   Change the vaadin-server dependency from

   Code Block
   language xml
   <dependency> <groupId>com.vaadin</groupId> <artifactId>vaadin-server</artifactId> <version>7.7.6</version> </dependency>

   to 

   Code Block
   language xml
   <dependency> <groupId>com.vaadin</groupId> <artifactId>vaadin-compatibility-server</artifactId> <version>8.1.5</version> </dependency>

   
   

   The full list of compatibility packages available for Framework 8:

   • vaadin-compatibility-server
   • vaadin-compatibility-client
   • vaadin-compatibility-client-compiled
   • vaadin-compatibility-shared
   • vaadin-compatibility-themes

   To be able to use the new Vaadin 8 features, add also the following dependency:

   mgnl-mini-code-snippet
   Stylelanguage boxedxml
   <dependency> <groupId>com.vaadin</groupId> <artifactId>vaadin-server</artifactId> <version>8.1.5</version> </dependency>

   
   

Please see also the links in the Further reading section for additional information on upgrading from Vaadin 7 to Vaadin 8.

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