diff --git a/build.sbt b/build.sbt
index c0d4b49..ed1e83b 100644
--- a/build.sbt
+++ b/build.sbt
@@ -74,7 +74,7 @@ lazy val plugin = project
       Seq(
         "com.lihaoyi" %%% "upickle" % "1.5.0",
         "org.scalactic" %% "scalactic" % "3.2.11" % "test",
-        "org.scalatest" %% "scalatest" % "3.2.11" % "test"
+        "org.scalatest" %% "scalatest" % "3.2.15" % "test"
       )
     },
     addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.10.0"),