import sbt._

object Dependencies {
  val CaffeineVersion = "2.5.6"

  val Caffeine = "com.github.ben-manes.caffeine" % "caffeine" % CaffeineVersion
  val Java8Compat = "org.scala-lang.modules" %% "scala-java8-compat" % "0.8.0"
  val Jsr305 = "com.google.code.findbugs" % "jsr305" % "3.0.1"
  val Scalactic = "org.scalactic" %% "scalactic" % "3.0.1"
  val Scalatest = "org.scalatest" %% "scalatest" % "3.0.1"
}

import sbt._

object Dependencies {
  val CaffeineVersion = "2.5.2"

  val Caffeine = "com.github.ben-manes.caffeine" % "caffeine" % CaffeineVersion
  val Java8Compat = "org.scala-lang.modules" %% "scala-java8-compat" % "0.8.0"
  val Jsr305 = "com.google.code.findbugs" % "jsr305" % "3.0.1"
  val Scalactic = "org.scalactic" %% "scalactic" % "3.0.1"
  val Scalatest = "org.scalatest" %% "scalatest" % "3.0.1"
}

--- 
+++ 
@@ -1,7 +1,7 @@
 import sbt._
 
 object Dependencies {
-  val CaffeineVersion = "2.5.2"
+  val CaffeineVersion = "2.5.6"
 
   val Caffeine = "com.github.ben-manes.caffeine" % "caffeine" % CaffeineVersion
   val Java8Compat = "org.scala-lang.modules" %% "scala-java8-compat" % "0.8.0"
Bump caffeine version to 2.5.6
