diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 3d0a60b..e8a99d4 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -9,9 +9,9 @@ object Dependencies {
     "io.circe" %% "circe-literal" % "0.14.6" // used for test only
   lazy val circeParser =
     "io.circe" %% "circe-parser" % "0.14.6" // used for site only
-  lazy val diffx = "com.softwaremill.diffx" %% "diffx-scalatest" % "0.8.3"
+  lazy val diffx = "com.softwaremill.diffx" %% "diffx-scalatest" % "0.9.0"
   lazy val diffxShould =
-    "com.softwaremill.diffx" %% "diffx-scalatest-should" % "0.8.3"
+    "com.softwaremill.diffx" %% "diffx-scalatest-should" % "0.9.0"
   lazy val logback = "ch.qos.logback" % "logback-classic" % "1.4.11"
   lazy val logstash =
     "net.logstash.logback" % "logstash-logback-encoder" % "7.4"