diff --git a/build.sc b/build.sc
index 699c23c..cf89be8 100644
--- a/build.sc
+++ b/build.sc
@@ -20,7 +20,7 @@ trait CommonModule
     extends ScalaModule
     with CiReleaseModule
     with ScalafmtModule {
-  override def scalaVersion = "2.13.11"
+  override def scalaVersion = "2.13.12"
 
   override def publishVersion: T[String] = T {
     VcsVersion
diff --git a/jsdeps/test/src/simple/build.sc b/jsdeps/test/src/simple/build.sc
index c1d3fd2..d1eefa8 100644
--- a/jsdeps/test/src/simple/build.sc
+++ b/jsdeps/test/src/simple/build.sc
@@ -6,7 +6,7 @@ import mill.scalalib.{DepSyntax, TestModule}
 import mill.{Agg, T}
 
 object main extends ScalaJSNpmModule {
-  override def scalaVersion = "2.13.11"
+  override def scalaVersion = "2.13.12"
   override def scalaJSVersion = "1.10.1"
 
   override def ivyDeps =
diff --git a/millbundler/test/src/rollup/build.sc b/millbundler/test/src/rollup/build.sc
index c5dd984..fe4245e 100644
--- a/millbundler/test/src/rollup/build.sc
+++ b/millbundler/test/src/rollup/build.sc
@@ -7,7 +7,7 @@ import mill.scalalib.{DepSyntax, TestModule}
 import mill.{Agg, T}
 
 object main extends ScalaJSDepsModule {
-  override def scalaVersion = "2.13.11"
+  override def scalaVersion = "2.13.12"
   override def scalaJSVersion = "1.10.1"
 
   override def ivyDeps =
diff --git a/millbundler/test/src/webpack-simple/build.sc b/millbundler/test/src/webpack-simple/build.sc
index 66cc2f4..67840cb 100644
--- a/millbundler/test/src/webpack-simple/build.sc
+++ b/millbundler/test/src/webpack-simple/build.sc
@@ -7,7 +7,7 @@ import mill.scalalib.{DepSyntax, TestModule}
 import mill.{Agg, T}
 
 object main extends ScalaJSDepsModule {
-  override def scalaVersion = "2.13.11"
+  override def scalaVersion = "2.13.12"
   override def scalaJSVersion = "1.10.1"
 
   override def ivyDeps =