3 files changed, 5 insertions, 5 deletions
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6027a1a9..3d5d4988 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        scala: [2.13.7, 2.12.14]
+        scala: [2.13.7, 2.12.15]
 
     steps:
       - name: Checkout
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        scala: [2.13.7, 2.12.14]
+        scala: [2.13.7, 2.12.15]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
diff --git a/build.sbt b/build.sbt
index f11d215b..d0c03cac 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,8 +4,8 @@ enablePlugins(SiteScaladocPlugin)
 
 lazy val commonSettings = Seq(
   organization := "edu.berkeley.cs",
-  scalaVersion := "2.12.14",
-  crossScalaVersions := Seq("2.13.7", "2.12.14")
+  scalaVersion := "2.12.15",
+  crossScalaVersions := Seq("2.13.7", "2.12.15")
 )
 
 lazy val isAtLeastScala213 = Def.setting {
diff --git a/build.sc b/build.sc
index 266ce644..07151082 100644
--- a/build.sc
+++ b/build.sc
@@ -10,7 +10,7 @@ import mill.contrib.buildinfo.BuildInfo
 
 import java.io.IOException
 
-object firrtl extends mill.Cross[firrtlCrossModule]("2.12.14", "2.13.7")
+object firrtl extends mill.Cross[firrtlCrossModule]("2.12.15", "2.13.7")
 
 class firrtlCrossModule(val crossScalaVersion: String)
     extends CrossSbtModule