Update error-prone

Change-Id: Ifa830386e66c80dc268edd7e4002b1dcd8a37384
diff --git a/pom.xml b/pom.xml
index fa29fd3..2fa49ae 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,7 +37,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <onos-build-conf.version>1.13.1</onos-build-conf.version>
         <guava.version>22.0</guava.version>
-        <errorprone.version>2.2.0</errorprone.version>
+        <errorprone.version>2.3.1</errorprone.version>
         <betachecker.version>1.0</betachecker.version>
     </properties>
 
@@ -163,7 +163,7 @@
                     <dependency>
                       <groupId>org.codehaus.plexus</groupId>
                       <artifactId>plexus-compiler-javac-errorprone</artifactId>
-                      <version>2.8.2</version>
+                      <version>2.8.3</version>
                     </dependency>
                     <dependency>
                       <groupId>com.google.errorprone</groupId>