diff --git a/community-build/src/scala/dotty/communitybuild/projects.scala b/community-build/src/scala/dotty/communitybuild/projects.scala
index dc989d4bd65c..57403ffc5a1a 100644
--- a/community-build/src/scala/dotty/communitybuild/projects.scala
+++ b/community-build/src/scala/dotty/communitybuild/projects.scala
@@ -121,7 +121,7 @@ final case class SbtCommunityProject(
       case Some(ivyHome) => List(s"-Dsbt.ivy.home=$ivyHome")
       case _ => Nil
     extraSbtArgs ++ sbtProps ++ List(
-      "-sbt-version", "1.4.7",
+      "-sbt-version", "1.4.9",
       "-Dsbt.supershell=false",
       s"-Ddotty.communitybuild.dir=$communitybuildDir",
       s"--addPluginSbtFile=$sbtPluginFilePath"
diff --git a/project/build.properties b/project/build.properties
index 0b2e09c5ac99..dbae93bcfd51 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.4.7
+sbt.version=1.4.9