diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index a0f5530..b416699 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -3,7 +3,7 @@ import sbt._
 object Dependencies {
 
   private[Dependencies] object versionOf {
-    val http4s      = "0.18.24"
+    val http4s      = "0.20.3"
     val monix       = "3.0.0-RC1"
     val scalaz      = "7.3.0-M27"
     val cats        = "1.6.1"
diff --git a/src/main/scala/http4s/extend/syntax/Http4sServiceSyntax.scala b/src/main/scala/http4s/extend/syntax/Http4sServiceSyntax.scala
index 9021d65..71f7351 100644
--- a/src/main/scala/http4s/extend/syntax/Http4sServiceSyntax.scala
+++ b/src/main/scala/http4s/extend/syntax/Http4sServiceSyntax.scala
@@ -3,10 +3,10 @@ package http4s.extend.syntax
 import cats.data.{Kleisli, OptionT}
 import cats.syntax.flatMap._
 import cats.{FlatMap, Functor}
-import org.http4s.{HttpService, Request, Response}
+import org.http4s.{HttpRoutes, Request, Response}
 
 private[syntax] trait Http4sServiceSyntax {
-  implicit def httpServiceSyntax[F[_]](s: HttpService[F]): HttpServiceOps[F] = new HttpServiceOps(s)
+  implicit def httpServiceSyntax[F[_]](s: HttpRoutes[F]): HttpServiceOps[F] = new HttpServiceOps(s)
 }
 
 /**