Change the current jar from the latest version of the jar. This is the site to download the jars: http://repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-core/
If you use maven, just replace the version in the dependency it in pom.xml:
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.3.3</version>
</dependency>