We know org.springframework.boot 2.2.1 version includes tomcat 9.027 version, if we need to upgrade to 9.037, we need to add it like below in pom.xml <tomcat-embed.version>9.0.37</tomcat-embed.version> <dependencyManagement> <dependencies> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-core</artifactId> <version>${tomcat-embed.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-el</artifactId> <version>${tomcat-embed.version}</version> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-websocket</artifactId> <version>${tomcat-embed.version}</version> </dependency> </dependencies> Suggest to use Maven Helper plugin for Idea to see