Check original Play! Framework migration documentation first:
a) change Play! version from
<properties> ... <play2.version>2.4.11</play2.version> </properties>
to
<properties> ... <play2.version>2.5.15</play2.version> </properties>
b) if using Specs2 tests remove repository definition (all artifacts are in Maven central repository)
<repositories> <repository> <id>scalaz-bintray</id> <name>Scalaz Bintray - releases</name> <url>https://dl.bintray.com/scalaz/releases/</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> </repositories>
c) add dependency
<dependency> <groupId>com.typesafe.play</groupId> <artifactId>play-logback_2.11</artifactId> <version>${play2.version}</version> <scope>runtime</scope> </dependency>
d) default router generator type has changed from static to injected, add or remove configuration parameter
<plugin> <groupId>com.google.code.play2-maven-plugin</groupId> <artifactId>play2-maven-plugin</artifactId> <version>${play2.plugin.version}</version> <extensions>true</extensions> <configuration> ... <routesGenerator>static</routesGenerator> </configuration> </plugin>
<plugin> <groupId>com.google.code.play2-maven-plugin</groupId> <artifactId>play2-maven-plugin</artifactId> <version>${play2.plugin.version}</version> <extensions>true</extensions> <configuration> ... <!-- remove <routesGenerator>injected</routesGenerator> --> </configuration> </plugin>