Set jackson version to 2.9.6
<artifactId>guava</artifactId>
<version>20.0</version>
</dependency>
+ <!-- Force version provided by io.swagger.parser.v3:swagger-parser transitively -->
+ <dependency>
+ <groupId>com.fasterxml.jackson.dataformat</groupId>
+ <artifactId>jackson-dataformat-yaml</artifactId>
+ <version>2.9.6</version>
+ </dependency>
<dependency>
<groupId>io.vertx</groupId>
