diff --git a/build.sbt b/build.sbt
index d8dc2b577..a2b56fed2 100644
--- a/build.sbt
+++ b/build.sbt
@@ -51,6 +51,7 @@ def commonSettings: Seq[Setting[_]] =
     resolvers += Resolver.typesafeIvyRepo("releases"),
     resolvers += Resolver.sonatypeRepo("snapshots"),
     resolvers += "bintray-sbt-maven-releases" at "https://dl.bintray.com/sbt/maven-releases/",
+    addCompilerPlugin("org.spire-math" % "kind-projector" % "0.9.4" cross CrossVersion.binary),
     concurrentRestrictions in Global += Util.testExclusiveRestriction,
     testOptions in Test += Tests.Argument(TestFrameworks.ScalaCheck, "-w", "1"),
     testOptions in Test += Tests.Argument(TestFrameworks.ScalaCheck, "-verbosity", "2"),