diff --git a/build.sbt b/build.sbt
index 3f87bb5..9863ba8 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,7 +2,7 @@ import ReleaseTransformations.*
 import sbtversionpolicy.withsbtrelease.ReleaseVersion.fromAggregatedAssessedCompatibilityWithLatestRelease
 
 lazy val baseSettings = Seq(
-  scalaVersion := "2.13.11",
+  scalaVersion := "2.13.12",
   organization := "com.gu.play-secret-rotation",
   licenses := Seq("Apache-2.0" -> url("http://www.apache.org/licenses/LICENSE-2.0")),
   scalacOptions ++= Seq("-deprecation", "-unchecked"),
@@ -21,7 +21,7 @@ lazy val core =
       "com.github.blemale" %% "scaffeine" % "5.2.1",
       "com.typesafe.scala-logging" %% "scala-logging" % "3.9.5",
       "org.threeten" % "threeten-extra" % "1.7.2",
-      "org.scalatest" %% "scalatest" % "3.2.16" % Test
+      "org.scalatest" %% "scalatest" % "3.2.17" % Test
     )
   )
 
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 592fa9d..fe950d5 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -2,6 +2,6 @@ addSbtPlugin("com.github.sbt" % "sbt-release" % "1.1.0")
 
 addSbtPlugin("ch.epfl.scala" % "sbt-version-policy" % "3.1.0")
 
-addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.9.21")
+addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.10.0")
 
-addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.1.1")
+addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.1.5")