diff --git a/build.sbt b/build.sbt
index 30a16c2d48..0a71cb9888 100644
--- a/build.sbt
+++ b/build.sbt
@@ -46,7 +46,7 @@ lazy val commonSettings = Seq(
     "com.github.mpilquist" %%% "simulacrum" % "0.10.0" % "compile-time",
     "org.typelevel" %%% "machinist" % "0.6.2",
     compilerPlugin("org.scalamacros" %% "paradise" % "2.1.0" cross CrossVersion.patch),
-    compilerPlugin("org.spire-math" %% "kind-projector" % "0.9.3")
+    compilerPlugin("org.spire-math" %% "kind-projector" % "0.9.4")
   ),
   fork in test := true,
   parallelExecution in Test := false,