diff --git a/coursier/src/main/scala/coursier/ToSbt.scala b/coursier/src/main/scala/coursier/ToSbt.scala
index ec979dab6..5af3bfc75 100644
--- a/coursier/src/main/scala/coursier/ToSbt.scala
+++ b/coursier/src/main/scala/coursier/ToSbt.scala
@@ -183,7 +183,7 @@ object ToSbt {
         case (k, v) =>
           clean(k) -> v.map(clean)
       }
-      .groupBy { case (k, v) => k }
+      .groupBy { case (k, _) => k }
       .mapValues { v =>
         v.flatMap {
           case (_, l) => l
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 2e4d14634..bc9a8f31c 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -6,7 +6,10 @@ object Dependencies {
   val scala211 = "2.11.12"
   val scala212 = "2.12.7"
 
-  private val coursierVersion = "1.1.0-M1"
+  private val ioVersion = "1.2.1"
+  private val utilVersion = "1.2.2"
+
+  private val coursierVersion = "1.1.0-M7"
 
   private val sbtIO = "org.scala-sbt" %% "io" % ioVersion