diff --git a/ivy/src/main/scala/sbt/IvyActions.scala b/ivy/src/main/scala/sbt/IvyActions.scala
index 419f41a56..657cdd65c 100644
--- a/ivy/src/main/scala/sbt/IvyActions.scala
+++ b/ivy/src/main/scala/sbt/IvyActions.scala
@@ -231,20 +231,24 @@ object IvyActions {
           throw w.resolveException
       }
       val newConfig = config.copy(module = mod.copy(modules = report.allModules))
-      updateClassifiers(ivySbt, newConfig, uwconfig, logicalClock, depDir, log, ???)
+      updateClassifiers(ivySbt, newConfig, uwconfig, logicalClock, depDir, Vector(), log)
     }
   @deprecated("This is no longer public.", "0.13.6")
   def updateClassifiers(ivySbt: IvySbt, config: GetClassifiersConfiguration, log: Logger): UpdateReport =
-    updateClassifiers(ivySbt, config, UnresolvedWarningConfiguration(), LogicalClock.unknown, None, log, ???)
+    updateClassifiers(ivySbt, config, UnresolvedWarningConfiguration(), LogicalClock.unknown, None, Vector(), log)
 
+  // artifacts can be obtained from calling toSeq on UpdateReport
   private[sbt] def updateClassifiers(ivySbt: IvySbt, config: GetClassifiersConfiguration,
-    uwconfig: UnresolvedWarningConfiguration, logicalClock: LogicalClock, depDir: Option[File], log: Logger, upd: UpdateReport): UpdateReport =
+    uwconfig: UnresolvedWarningConfiguration, logicalClock: LogicalClock, depDir: Option[File],
+    artifacts: Vector[(String, ModuleID, Artifact, File)],
+    log: Logger): UpdateReport =
     {
       import config.{ configuration => c, module => mod, _ }
       import mod.{ configurations => confs, _ }
       assert(classifiers.nonEmpty, "classifiers cannot be empty")
       val baseModules = modules map { m => restrictedCopy(m, true) }
-      val deps = baseModules.distinct flatMap classifiedArtifacts(upd, exclude) //classifiedArtifacts(classifiers, exclude)
+      // Adding list of explicit artifacts here.
+      val deps = baseModules.distinct flatMap classifiedArtifacts(classifiers, exclude, artifacts)
       val base = restrictedCopy(id, true).copy(name = id.name + classifiers.mkString("$", "_", ""))
       val module = new ivySbt.Module(InlineConfigurationWithExcludes(base, ModuleInfo(base.name), deps).copy(ivyScala = ivyScala, configurations = confs))
       val upConf = new UpdateConfiguration(c.retrieve, true, c.logging)
@@ -254,14 +258,21 @@ object IvyActions {
           throw w.resolveException
       }
     }
-  def classifiedArtifacts(updateReport: UpdateReport, exclude: Map[ModuleID, Set[String]])(m: ModuleID): Option[ModuleID] = {
+  // This version adds explicit artifact
+  private[sbt] def classifiedArtifacts(classifiers: Seq[String],
+    exclude: Map[ModuleID, Set[String]],
+    artifacts: Vector[(String, ModuleID, Artifact, File)])(m: ModuleID): Option[ModuleID] = {
     def sameModule(m1: ModuleID, m2: ModuleID): Boolean = m1.organization == m2.organization && m1.name == m2.name && m1.revision == m2.revision
-    updateReport.toSeq.groupBy(_._2) collectFirst {
-      case (k, v) if sameModule(k, m) =>
-        val arts = v.collect { case (_, _, art, _) if art.classifier.isDefined => art }.distinct
-        m.copy(isTransitive = false, explicitArtifacts = arts)
-    }
+    def explicitArtifacts =
+      {
+        val arts = (artifacts collect { case (_, x, art, _) if sameModule(m, x) && art.classifier.isDefined => art }).distinct
+        if (arts.isEmpty) None
+        else Some(m.copy(isTransitive = false, explicitArtifacts = arts))
+      }
+    def hardcodedArtifacts = classifiedArtifacts(classifiers, exclude)(m)
+    explicitArtifacts orElse hardcodedArtifacts
   }
+  @deprecated("This is no longer public.", "0.13.10")
   def classifiedArtifacts(classifiers: Seq[String], exclude: Map[ModuleID, Set[String]])(m: ModuleID): Option[ModuleID] =
     {
       val excluded = exclude getOrElse (restrictedCopy(m, false), Set.empty)
diff --git a/ivy/src/main/scala/sbt/UpdateReport.scala b/ivy/src/main/scala/sbt/UpdateReport.scala
index d7d364b47..6cb401c5f 100644
--- a/ivy/src/main/scala/sbt/UpdateReport.scala
+++ b/ivy/src/main/scala/sbt/UpdateReport.scala
@@ -200,7 +200,21 @@ final class UpdateReport(val cachedDescriptor: File, val configurations: Seq[Con
   override def toString = "Update report:\n\t" + stats + "\n" + configurations.mkString
 
   /** All resolved modules in all configurations. */
-  def allModules: Seq[ModuleID] = configurations.flatMap(_.allModules).distinct
+  def allModules: Seq[ModuleID] =
+    {
+      val key = (m: ModuleID) => (m.organization, m.name, m.revision)
+      configurations.flatMap(_.allModules).groupBy(key).toSeq map {
+        case (k, v) =>
+          v reduceLeft { (agg, x) =>
+            agg.copy(
+              configurations = (agg.configurations, x.configurations) match {
+                case (None, _)            => x.configurations
+                case (Some(ac), None)     => Some(ac)
+                case (Some(ac), Some(xc)) => Some(s"$ac;$xc")
+              })
+          }
+      }
+    }
 
   def retrieve(f: (String, ModuleID, Artifact, File) => File): UpdateReport =
     new UpdateReport(cachedDescriptor, configurations map { _ retrieve f }, stats, stamps)
diff --git a/main/src/main/scala/sbt/Defaults.scala b/main/src/main/scala/sbt/Defaults.scala
index 24baf2d34..55730060c 100755
--- a/main/src/main/scala/sbt/Defaults.scala
+++ b/main/src/main/scala/sbt/Defaults.scala
@@ -1234,7 +1234,8 @@ object Classpaths {
         val uwConfig = (unresolvedWarningConfiguration in update).value
         val logicalClock = LogicalClock(state.value.hashCode)
         val depDir = dependencyCacheDirectory.value
-        IvyActions.updateClassifiers(is, GetClassifiersConfiguration(mod, excludes, c, ivyScala.value), uwConfig, LogicalClock(state.value.hashCode), Some(depDir), s.log, update.value)
+        val artifacts = update.value.toSeq.toVector
+        IvyActions.updateClassifiers(is, GetClassifiersConfiguration(mod, excludes, c, ivyScala.value), uwConfig, LogicalClock(state.value.hashCode), Some(depDir), artifacts, s.log)
       }
     } tag (Tags.Update, Tags.Network)
   )
diff --git a/notes/0.13.10/fix-updateclassifiers-configuration.markdown b/notes/0.13.10/fix-updateclassifiers-configuration.markdown
new file mode 100644
index 000000000..b69053d5a
--- /dev/null
+++ b/notes/0.13.10/fix-updateclassifiers-configuration.markdown
@@ -0,0 +1,13 @@
+
+  [@eed3si9n]: https://github.com/eed3si9n
+  [@Duhemm]: https://github.com/Duhemm
+  [2264]: https://github.com/sbt/sbt/issues/2264
+
+### Fixes with compatibility implications
+
+### Improvements
+
+### Bug fixes
+
+- Fixes `updateClassifiers` on Ivy modules without `default` configuration.
+  [#2264][2264] by [@eed3si9n][@eed3si9n]/[@Duhemm][@Duhemm]