diff --git a/build.sbt b/build.sbt
index 9f34bd5..36987b1 100644
--- a/build.sbt
+++ b/build.sbt
@@ -7,5 +7,5 @@ lazy val root = (project in file("."))
     name := "pps-lab7",
     libraryDependencies += "com.github.sbt" % "junit-interface" % "0.13.3" % Test,
     // add scala test
-    libraryDependencies += "org.scalatest" %% "scalatest" % "3.2.18" % Test
+    libraryDependencies += "org.scalatest" %% "scalatest" % "3.2.20" % Test
   )