diff --git a/build.sbt b/build.sbt
index f51ade8..4560c07 100644
--- a/build.sbt
+++ b/build.sbt
@@ -5,3 +5,5 @@ version := "0.1"
 scalaVersion := "2.12.8"
 
 libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.7" % "test"
+libraryDependencies += "org.typelevel" %% "cats-effect" % "1.2.0"
+