diff --git a/build.sbt b/build.sbt
index 0b8a144..c1cdd8c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -10,9 +10,8 @@ val versionRegex = """^(.*)\.(.*)\.(.*)$""".r
 
 val sparkVersion = settingKey[String]("Spark version")
 
-val scala2_13 = "2.13.13"
-val scala2_12 = "2.12.15"
-val scala2_11 = "2.11.17"
+val scala2_13 = "2.13.14"
+val scala2_12 = "2.12.20"
 
 sparkVersion := System.getProperty("spark.testVersion", "3.5.1")
 crossScalaVersions := {
@@ -53,7 +52,7 @@ import laika.format.Markdown
 import laika.config.SyntaxHighlighting
 import laika.ast.Path.Root
 import laika.ast.{Image, ExternalTarget}
-import laika.helium.config._
+import laika.helium.config.*
 import laika.helium.Helium
 
 laikaTheme := Helium.defaults.site
diff --git a/project/plugins.sbt b/project/plugins.sbt
index fc8bdb9..5bf82d0 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -6,8 +6,6 @@ resolvers += Resolver.typesafeRepo("releases")
 
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
 
-addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.12")
-
-addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.2.1")
+addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.6.1")
 
 addSbtPlugin("org.typelevel" % "laika-sbt" % "1.2.0")