diff --git a/sbt/src/sbt-test/project/scala3-semanticdb/LICENSE b/sbt/src/sbt-test/project/scala3-semanticdb/LICENSE
new file mode 100644
index 000000000..728844ee3
--- /dev/null
+++ b/sbt/src/sbt-test/project/scala3-semanticdb/LICENSE
@@ -0,0 +1,25 @@
+Copyright (c) 2015 The dotty-example-project contributors.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
diff --git a/sbt/src/sbt-test/project/scala3-semanticdb/README.md b/sbt/src/sbt-test/project/scala3-semanticdb/README.md
new file mode 100644
index 000000000..daa544226
--- /dev/null
+++ b/sbt/src/sbt-test/project/scala3-semanticdb/README.md
@@ -0,0 +1 @@
+Cut-n-pasted from https://github.com/scala/scala3-example-project/tree/353ccef820699f20eb012420a9deb28814481031
diff --git a/sbt/src/sbt-test/project/scala3-semanticdb/build.sbt b/sbt/src/sbt-test/project/scala3-semanticdb/build.sbt
new file mode 100644
index 000000000..7b302985e
--- /dev/null
+++ b/sbt/src/sbt-test/project/scala3-semanticdb/build.sbt
@@ -0,0 +1,13 @@
+ThisBuild / scalaVersion := "3.0.0-M2"
+ThisBuild / semanticdbEnabled := true
+
+lazy val check = taskKey[Unit]("check the Scala 3 semanticdb files")
+
+Compile / check := checkTask("Main.semanticdb")
+Test / check := checkTask("Test.semanticdb")
+
+def checkTask(fileName: String): Def.Initialize[Task[Unit]] = Def.task {
+  val _ = compile.value
+  val dir = semanticdbTargetRoot.value
+  assert(IO.listFiles(dir).exists(_.getName == fileName), s"$fileName is missing")
+}
\ No newline at end of file
diff --git a/sbt/src/sbt-test/project/scala3-semanticdb/src/main/scala/Main.scala b/sbt/src/sbt-test/project/scala3-semanticdb/src/main/scala/Main.scala
new file mode 100644
index 000000000..9deb66d0b
--- /dev/null
+++ b/sbt/src/sbt-test/project/scala3-semanticdb/src/main/scala/Main.scala
@@ -0,0 +1,8 @@
+
+object Main {
+  val msg = "Hello, World!"
+
+  def main(args: Array[String]): Unit = {
+    println(msg)
+  }
+}
diff --git a/sbt/src/sbt-test/project/scala3-semanticdb/src/test/scala/Test.scala b/sbt/src/sbt-test/project/scala3-semanticdb/src/test/scala/Test.scala
new file mode 100644
index 000000000..f197443c9
--- /dev/null
+++ b/sbt/src/sbt-test/project/scala3-semanticdb/src/test/scala/Test.scala
@@ -0,0 +1,3 @@
+object Test {
+  assert(Main.msg == "Hello, World!")
+}
\ No newline at end of file
diff --git a/sbt/src/sbt-test/project/scala3-semanticdb/test b/sbt/src/sbt-test/project/scala3-semanticdb/test
new file mode 100644
index 000000000..699323992
--- /dev/null
+++ b/sbt/src/sbt-test/project/scala3-semanticdb/test
@@ -0,0 +1,3 @@
+> Compile / check
+> Test / check
+