In case you need to adjust the version of the embedded tomcat to run you can do so by changing the runtime-dependencies:
<project> [...] <properties> <tomcat.version>7.0.27</tomcat.version> [...] </properties> [...] <build> <pluginManagement> <plugins> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <version>2.1</version> <dependencies> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-core</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-util</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-coyote</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-api</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-jdbc</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-dbcp</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-servlet-api</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-jsp-api</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-jasper</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-jasper-el</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-el-api</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-catalina</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-tribes</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-catalina-ha</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-annotations-api</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-juli</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-logging-juli</artifactId> <version>${tomcat.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-logging-log4j</artifactId> <version>${tomcat.version}</version> </dependency> </dependencies> </plugin> [...] </plugins> </pluginManagement> [...] </build> [...] </project>