diff --git a/internal/util-collection/src/main/scala/sbt/internal/util/HList.scala b/internal/util-collection/src/main/scala/sbt/internal/util/HList.scala
index 0eb4edd42..fea91da92 100644
--- a/internal/util-collection/src/main/scala/sbt/internal/util/HList.scala
+++ b/internal/util-collection/src/main/scala/sbt/internal/util/HList.scala
@@ -11,7 +11,7 @@ import Types._
 
 /**
  * A minimal heterogeneous list type.  For background, see
- * http://apocalisp.wordpress.com/2010/07/06/type-level-programming-in-scala-part-6a-heterogeneous-list basics/
+ * https://apocalisp.wordpress.com/2010/07/06/type-level-programming-in-scala-part-6a-heterogeneous-list basics/
  */
 sealed trait HList {
   type Wrap[M[_]] <: HList