diff --git a/build.sbt b/build.sbt
index cecab580..c6e8f114 100644
--- a/build.sbt
+++ b/build.sbt
@@ -45,7 +45,7 @@ libraryDependencies ++= List(
   "org.scalatest" %% "scalatest" % "3.2.19" % Test
 )
 
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
 
 // keep this as low as possible to avoid running into binary incompatibility such as https://github.com/sbt/sbt/issues/5049
 pluginCrossBuild / sbtVersion := "1.3.1"
diff --git a/src/sbt-test/sbt-1.5/scalafixEnable/build.sbt b/src/sbt-test/sbt-1.5/scalafixEnable/build.sbt
index 86c4551d..93274b51 100644
--- a/src/sbt-test/sbt-1.5/scalafixEnable/build.sbt
+++ b/src/sbt-test/sbt-1.5/scalafixEnable/build.sbt
@@ -15,7 +15,7 @@ lazy val scala211 = project
 lazy val scala212 = project
   .in(file("scala212"))
   .settings(
-    scalaVersion := "2.12.19" // supported by semanticdb-scalac
+    scalaVersion := "2.12.20" // supported by semanticdb-scalac
   )
 
 lazy val scala3 = project
diff --git a/src/sbt-test/sbt-scalafix/basic/build.sbt b/src/sbt-test/sbt-scalafix/basic/build.sbt
index f5464d86..3a077a01 100644
--- a/src/sbt-test/sbt-scalafix/basic/build.sbt
+++ b/src/sbt-test/sbt-scalafix/basic/build.sbt
@@ -1,6 +1,6 @@
 inThisBuild(
   List(
-    scalaVersion := "2.12.19",
+    scalaVersion := "2.12.20",
     libraryDependencies ++= List(
       "org.scalameta" %% "testkit" % "4.3.10" % Test,
       "org.scalameta" %% "munit" % "0.7.9" % Test,
diff --git a/src/sbt-test/sbt-scalafix/inconfig/build.sbt b/src/sbt-test/sbt-scalafix/inconfig/build.sbt
index a8bf1888..fd6f8a37 100644
--- a/src/sbt-test/sbt-scalafix/inconfig/build.sbt
+++ b/src/sbt-test/sbt-scalafix/inconfig/build.sbt
@@ -1,6 +1,6 @@
 inThisBuild(
   List(
-    scalaVersion := "2.12.19",
+    scalaVersion := "2.12.20",
     libraryDependencies ++= List(
       "org.scalameta" %% "testkit" % "4.3.10" % Test,
       "org.scalameta" %% "munit" % "0.7.9" % Test,
diff --git a/src/sbt-test/sbt-scalafix/root-validation/build.sbt b/src/sbt-test/sbt-scalafix/root-validation/build.sbt
index e8003f6c..0f61111b 100644
--- a/src/sbt-test/sbt-scalafix/root-validation/build.sbt
+++ b/src/sbt-test/sbt-scalafix/root-validation/build.sbt
@@ -1,6 +1,6 @@
 inThisBuild(
   List(
-    scalaVersion := "2.12.19"
+    scalaVersion := "2.12.20"
   )
 )
 
diff --git a/src/sbt-test/sbt-scalafix/semanticdb-enabled/build.sbt b/src/sbt-test/sbt-scalafix/semanticdb-enabled/build.sbt
index 5aa0bf5e..dfd9d9a1 100644
--- a/src/sbt-test/sbt-scalafix/semanticdb-enabled/build.sbt
+++ b/src/sbt-test/sbt-scalafix/semanticdb-enabled/build.sbt
@@ -4,7 +4,7 @@ ThisBuild / semanticdbEnabled := true
 
 lazy val scala212 = project
   .settings(
-    scalaVersion := "2.12.19",
+    scalaVersion := "2.12.20",
     scalacOptions += "-Ywarn-unused"
   )
 
diff --git a/src/sbt-test/skip-java17/scalafixResolvers/build.sbt b/src/sbt-test/skip-java17/scalafixResolvers/build.sbt
index 3cda631a..266146e1 100644
--- a/src/sbt-test/skip-java17/scalafixResolvers/build.sbt
+++ b/src/sbt-test/skip-java17/scalafixResolvers/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
 
 TaskKey[Unit]("check") := {
   val expectedRepositories: Seq[String] = Seq(