diff --git a/libs/javalib/src/mill/javalib/CoursierModule.scala b/libs/javalib/src/mill/javalib/CoursierModule.scala
index 31c4e7df77d..df8587c01e1 100644
--- a/libs/javalib/src/mill/javalib/CoursierModule.scala
+++ b/libs/javalib/src/mill/javalib/CoursierModule.scala
@@ -327,4 +327,14 @@ object CoursierModule {
     def bind(t: coursier.core.Dependency, bind: Dep => BoundDep): BoundDep =
       BoundDep(t, force = false)
   }
+
+  object KnownRepositories {
+
+    /**
+     * Repository containing nightly builds of Scala language  and compiler projects.
+     * See announcement: https://www.scala-lang.org/news/new-scala-nightlies-repo.html
+     */
+    val ScalaLangNightlies = "https://repo.scala-lang.org/artifactory/maven-nightlies"
+  }
+
 }
diff --git a/libs/scalalib/test/src/mill/scalalib/Scala38NightlyTests.scala b/libs/scalalib/test/src/mill/scalalib/Scala38NightlyTests.scala
index f0597ac59fe..624e3fcc67f 100644
--- a/libs/scalalib/test/src/mill/scalalib/Scala38NightlyTests.scala
+++ b/libs/scalalib/test/src/mill/scalalib/Scala38NightlyTests.scala
@@ -8,15 +8,15 @@ import utest.*
 // TODO: Once Scala 3.8.0 is out, we can change this test to use 3.8.0 and remove the extra repo
 object Scala38NightlyTests extends TestSuite {
 
-  val repo = "https://repo.scala-lang.org/artifactory/maven-nightlies"
-
   object Scala38Nightly extends TestRootModule {
     object JvmWorker extends JvmWorkerModule {
-      override def repositories = super.repositories() ++ Seq(repo)
+      override def repositories =
+        super.repositories() ++ Seq(CoursierModule.KnownRepositories.ScalaLangNightlies)
     }
     object foo extends ScalaModule {
       override def jvmWorker: ModuleRef[JvmWorkerModule] = ModuleRef(JvmWorker)
-      override def repositories = super.repositories() ++ Seq(repo)
+      override def repositories =
+        super.repositories() ++ Seq(CoursierModule.KnownRepositories.ScalaLangNightlies)
       override def scalaVersion = "3.8.0-RC1-bin-20250825-ee2f641-NIGHTLY"
       override def mvnDeps = Seq(
         mvn"org.scala-lang.modules::scala-xml:2.4.0"