diff --git a/build.sc b/build.sc
index 58cdc29..0a8030e 100644
--- a/build.sc
+++ b/build.sc
@@ -23,7 +23,7 @@ trait MillScalafixCross
     with GitVersionedPublishModule
     with Cross.Module[String] {
   def millVersion = crossValue
-  override def crossScalaVersion = "2.13.10"
+  override def crossScalaVersion = "2.13.12"
   override def artifactSuffix    = s"_mill${millBinaryVersion(millVersion)}" + super.artifactSuffix()
 
   override def compileIvyDeps = super.compileIvyDeps() ++ Agg(
diff --git a/itest/src/check-failed/build.sc b/itest/src/check-failed/build.sc
index 4514168..abec7f9 100644
--- a/itest/src/check-failed/build.sc
+++ b/itest/src/check-failed/build.sc
@@ -3,6 +3,6 @@ import com.goyeau.mill.scalafix.ScalafixModule
 import mill.scalalib._
 
 object project extends ScalaModule with ScalafixModule {
-  def scalaVersion  = "2.13.10"
+  def scalaVersion  = "2.13.12"
   def scalacOptions = Seq("-Ywarn-unused")
 }
diff --git a/itest/src/check/build.sc b/itest/src/check/build.sc
index 4514168..abec7f9 100644
--- a/itest/src/check/build.sc
+++ b/itest/src/check/build.sc
@@ -3,6 +3,6 @@ import com.goyeau.mill.scalafix.ScalafixModule
 import mill.scalalib._
 
 object project extends ScalaModule with ScalafixModule {
-  def scalaVersion  = "2.13.10"
+  def scalaVersion  = "2.13.12"
   def scalacOptions = Seq("-Ywarn-unused")
 }
diff --git a/itest/src/custom-rule/build.sc b/itest/src/custom-rule/build.sc
index ae611c1..e1184d3 100644
--- a/itest/src/custom-rule/build.sc
+++ b/itest/src/custom-rule/build.sc
@@ -5,7 +5,7 @@ import mill.scalalib._
 import os._
 
 object project extends ScalaModule with ScalafixModule {
-  def scalaVersion    = "2.13.10"
+  def scalaVersion    = "2.13.12"
   def semanticDbEnablePluginScalacOptions = super.semanticDbEnablePluginScalacOptions() ++ Seq("-P:semanticdb:synthetics:on")
   def scalafixIvyDeps = Agg(ivy"org.scala-lang.modules::scala-collection-migrations:2.11.0")
 }
diff --git a/itest/src/fix/build.sc b/itest/src/fix/build.sc
index c0a4e7d..e64d549 100644
--- a/itest/src/fix/build.sc
+++ b/itest/src/fix/build.sc
@@ -5,7 +5,7 @@ import mill.scalalib._
 import os._
 
 object project extends ScalaModule with ScalafixModule {
-  def scalaVersion  = "2.13.10"
+  def scalaVersion  = "2.13.12"
   def scalafixScalaBinaryVersion = mill.scalalib.api.ZincWorkerUtil.scalaBinaryVersion(scalaVersion())
   def scalacOptions = Seq("-Ywarn-unused")
 }