diff --git a/build.sbt b/build.sbt
index 345a3f8..538d02c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,7 +1,7 @@
 ThisBuild / name         := "futiles"
 ThisBuild / organization := "com.markatta"
 
-ThisBuild / crossScalaVersions := Seq("2.12.15", "2.11.12", "2.13.8")
+ThisBuild / crossScalaVersions := Seq("2.12.18", "2.13.12")
 ThisBuild / scalaVersion       := crossScalaVersions.value.last
 
 val flagsFor11 = Seq(
diff --git a/project/build.properties b/project/build.properties
index c8fcab5..abbbce5 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.6.2
+sbt.version=1.9.8
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 971d12b..aa0790f 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,6 +1,6 @@
-addSbtPlugin("de.heikoseeberger" % "sbt-header"         % "5.6.0")
+addSbtPlugin("de.heikoseeberger" % "sbt-header"         % "5.10.0")
 addSbtPlugin("com.codecommit"    % "sbt-github-actions" % "0.14.2")
 addSbtPlugin("org.scalameta"     % "sbt-scalafmt"       % "2.4.6")
 addSbtPlugin("org.scoverage"     % "sbt-scoverage"      % "1.9.3")
 addSbtPlugin("org.scoverage"     % "sbt-coveralls"      % "1.3.1")
-addSbtPlugin("com.github.sbt"    % "sbt-ci-release"     % "1.5.10")
+addSbtPlugin("com.github.sbt"    % "sbt-ci-release"     % "1.5.12")