diff --git a/plugin/src/main/scala-2.10/coursier/CoursierPlugin.scala b/plugin/src/main/scala-2.10/coursier/CoursierPlugin.scala
index 04c5979e5..e9ef4f01f 100644
--- a/plugin/src/main/scala-2.10/coursier/CoursierPlugin.scala
+++ b/plugin/src/main/scala-2.10/coursier/CoursierPlugin.scala
@@ -19,6 +19,7 @@ object CoursierPlugin extends AutoPlugin {
     val coursierSourceRepositories = Keys.coursierSourceRepositories
     val coursierResolvers = Keys.coursierResolvers
     val coursierSbtResolvers = Keys.coursierSbtResolvers
+    val coursierUseSbtCredentials = Keys.coursierUseSbtCredentials
     val coursierCredentials = Keys.coursierCredentials
     val coursierFallbackDependencies = Keys.coursierFallbackDependencies
     val coursierCache = Keys.coursierCache
@@ -62,6 +63,7 @@ object CoursierPlugin extends AutoPlugin {
     coursierSourceRepositories := Nil,
     coursierResolvers <<= Tasks.coursierResolversTask,
     coursierSbtResolvers <<= externalResolvers in updateSbtClassifiers,
+    coursierUseSbtCredentials := true,
     coursierCredentials := Map.empty,
     coursierFallbackDependencies <<= Tasks.coursierFallbackDependenciesTask,
     coursierCache := Cache.default,
diff --git a/plugin/src/main/scala-2.10/coursier/Keys.scala b/plugin/src/main/scala-2.10/coursier/Keys.scala
index 995f74084..4c5e20a52 100644
--- a/plugin/src/main/scala-2.10/coursier/Keys.scala
+++ b/plugin/src/main/scala-2.10/coursier/Keys.scala
@@ -18,6 +18,7 @@ object Keys {
   val coursierSourceRepositories = SettingKey[Seq[File]]("coursier-source-repositories")
   val coursierResolvers = TaskKey[Seq[Resolver]]("coursier-resolvers")
   val coursierSbtResolvers = TaskKey[Seq[Resolver]]("coursier-sbt-resolvers")
+  val coursierUseSbtCredentials = SettingKey[Boolean]("coursier-use-sbt-credentials")
   val coursierCredentials = TaskKey[Map[String, Credentials]]("coursier-credentials")
 
   val coursierCache = SettingKey[File]("coursier-cache")
diff --git a/plugin/src/main/scala-2.10/coursier/Tasks.scala b/plugin/src/main/scala-2.10/coursier/Tasks.scala
index e8fe7551f..10cf1758d 100644
--- a/plugin/src/main/scala-2.10/coursier/Tasks.scala
+++ b/plugin/src/main/scala-2.10/coursier/Tasks.scala
@@ -5,7 +5,7 @@ import java.net.URL
 import java.nio.file.Files
 import java.util.concurrent.Executors
 
-import coursier.core.Publication
+import coursier.core.{ Authentication, Publication }
 import coursier.ivy.IvyRepository
 import coursier.Keys._
 import coursier.Structure._
@@ -19,6 +19,7 @@ import sbt.Keys._
 
 import scala.collection.mutable
 import scala.collection.JavaConverters._
+import scala.util.Try
 
 import scalaz.{ \/-, -\/ }
 import scalaz.concurrent.{ Task, Strategy }
@@ -371,7 +372,18 @@ object Tasks {
         "ivy.home" -> (new File(sys.props("user.home")).toURI.getPath + ".ivy2")
       ) ++ sys.props
 
-      val credentials = coursierCredentials.value
+      val useSbtCredentials = coursierUseSbtCredentials.value
+
+      val authenticationByHost =
+        if (useSbtCredentials) {
+          val cred = sbt.Keys.credentials.value.map(sbt.Credentials.toDirect)
+          cred.map { c =>
+            c.host -> Authentication(c.userName, c.passwd)
+          }.toMap
+        } else
+          Map.empty[String, Authentication]
+
+      val authenticationByRepositoryId = coursierCredentials.value.mapValues(_.authentication)
 
       val sourceRepositories0 = sourceRepositories.map {
         base =>
@@ -392,6 +404,36 @@ object Tasks {
           )
         }
 
+      def withAuthenticationByHost(repo: Repository, credentials: Map[String, Authentication]): Repository = {
+
+        def httpHost(s: String) =
+          if (s.startsWith("http://") || s.startsWith("https://"))
+            Try(Cache.url(s).getHost).toOption
+          else
+            None
+
+        repo match {
+          case m: MavenRepository =>
+            if (m.authentication.isEmpty)
+              httpHost(m.root).flatMap(credentials.get).fold(m) { auth =>
+                m.copy(authentication = Some(auth))
+              }
+            else
+              m
+          case i: IvyRepository =>
+            if (i.authentication.isEmpty) {
+              val base = i.pattern.takeWhile(c => c != '[' && c != '(' && c != '$')
+
+              httpHost(base).flatMap(credentials.get).fold(i) { auth =>
+                i.copy(authentication = Some(auth))
+              }
+            } else
+              i
+          case _ =>
+            repo
+        }
+      }
+
       val repositories =
         Seq(globalPluginsRepo, interProjectRepo) ++
         sourceRepositories0 ++
@@ -400,9 +442,9 @@ object Tasks {
             resolver,
             ivyProperties,
             log,
-            credentials.get(resolver.name).map(_.authentication)
+            authenticationByRepositoryId.get(resolver.name)
           )
-        } ++
+        }.map(withAuthenticationByHost(_, authenticationByHost)) ++
         fallbackDependenciesRepositories
 
       def resolution = {
diff --git a/plugin/src/sbt-test/sbt-coursier/credentials-sbt/build.sbt b/plugin/src/sbt-test/sbt-coursier/credentials-sbt/build.sbt
new file mode 100644
index 000000000..132e5248f
--- /dev/null
+++ b/plugin/src/sbt-test/sbt-coursier/credentials-sbt/build.sbt
@@ -0,0 +1,14 @@
+scalaVersion := "2.11.8"
+
+resolvers += "authenticated" at "http://localhost:8080"
+
+credentials += Credentials("", "localhost", "user", "pass")
+
+coursierCachePolicies := {
+  if (sys.props("os.name").startsWith("Windows"))
+    coursierCachePolicies.value
+  else
+    Seq(coursier.CachePolicy.ForceDownload)
+}
+
+libraryDependencies += "com.abc" % "test" % "0.1"
diff --git a/plugin/src/sbt-test/sbt-coursier/credentials-sbt/project/plugins.sbt b/plugin/src/sbt-test/sbt-coursier/credentials-sbt/project/plugins.sbt
new file mode 100644
index 000000000..152225a9e
--- /dev/null
+++ b/plugin/src/sbt-test/sbt-coursier/credentials-sbt/project/plugins.sbt
@@ -0,0 +1,11 @@
+{
+  val pluginVersion = sys.props.getOrElse(
+    "plugin.version",
+    throw new RuntimeException(
+      """|The system property 'plugin.version' is not defined.
+         |Specify this property using the scriptedLaunchOpts -D.""".stripMargin
+    )
+  )
+
+  addSbtPlugin("io.get-coursier" % "sbt-coursier" % pluginVersion)
+}
diff --git a/plugin/src/sbt-test/sbt-coursier/credentials-sbt/src/main/scala/Main.scala b/plugin/src/sbt-test/sbt-coursier/credentials-sbt/src/main/scala/Main.scala
new file mode 100644
index 000000000..86ae9e9e3
--- /dev/null
+++ b/plugin/src/sbt-test/sbt-coursier/credentials-sbt/src/main/scala/Main.scala
@@ -0,0 +1 @@
+object Main extends App
\ No newline at end of file
diff --git a/plugin/src/sbt-test/sbt-coursier/credentials-sbt/test b/plugin/src/sbt-test/sbt-coursier/credentials-sbt/test
new file mode 100644
index 000000000..4d96ce4c9
--- /dev/null
+++ b/plugin/src/sbt-test/sbt-coursier/credentials-sbt/test
@@ -0,0 +1 @@
+> coursierResolution