diff --git a/build.sbt b/build.sbt
index 53f52902..98813ba6 100755
--- a/build.sbt
+++ b/build.sbt
@@ -36,7 +36,7 @@ val zioHttpVersion    = "1.0.0.0-RC17"
 val zioJson           = "0.1.5"
 val zioMagicVersion   = "0.3.8"
 val zioPreludeVersion = "1.0.0-RC7"
-val sttpVersion       = "2.2.9"
+val sttpVersion       = "3.3.15"
 
 lazy val root =
   project
@@ -49,13 +49,13 @@ lazy val zioWebhooks = module("zio-webhooks", "webhooks")
   .settings(buildInfoSettings("zio.webhooks"))
   .settings(
     libraryDependencies ++= Seq(
-      "dev.zio"                      %% "zio"                           % zioVersion,
-      "dev.zio"                      %% "zio-json"                      % zioJson,
-      "dev.zio"                      %% "zio-prelude"                   % zioPreludeVersion,
-      "dev.zio"                      %% "zio-streams"                   % zioVersion,
-      "dev.zio"                      %% "zio-test"                      % zioVersion,
-      "com.softwaremill.sttp.client" %% "core"                          % sttpVersion,
-      "com.softwaremill.sttp.client" %% "async-http-client-backend-zio" % sttpVersion
+      "dev.zio"                       %% "zio"                           % zioVersion,
+      "dev.zio"                       %% "zio-json"                      % zioJson,
+      "dev.zio"                       %% "zio-prelude"                   % zioPreludeVersion,
+      "dev.zio"                       %% "zio-streams"                   % zioVersion,
+      "dev.zio"                       %% "zio-test"                      % zioVersion,
+      "com.softwaremill.sttp.client3" %% "core"                          % sttpVersion,
+      "com.softwaremill.sttp.client3" %% "async-http-client-backend-zio" % sttpVersion
     )
   )
   .settings(
diff --git a/webhooks/src/main/scala/zio/webhooks/backends/sttp/WebhookSttpClient.scala b/webhooks/src/main/scala/zio/webhooks/backends/sttp/WebhookSttpClient.scala
index d27c21fd..48f104cc 100644
--- a/webhooks/src/main/scala/zio/webhooks/backends/sttp/WebhookSttpClient.scala
+++ b/webhooks/src/main/scala/zio/webhooks/backends/sttp/WebhookSttpClient.scala
@@ -1,7 +1,7 @@
 package zio.webhooks.backends.sttp
 
-import _root_.sttp.client.asynchttpclient.zio.AsyncHttpClientZioBackend
-import _root_.sttp.client._
+import _root_.sttp.client3.asynchttpclient.zio.{ AsyncHttpClientZioBackend, SttpClient }
+import _root_.sttp.client3._
 import sttp.model.Uri
 import zio._
 import zio.webhooks.WebhookError.BadWebhookUrlError
@@ -14,7 +14,7 @@ import java.io.IOException
  * A [[WebhookSttpClient]] provides a [[WebhookHttpClient]] using sttp's ZIO backend, i.e.
  * `AsyncHttpClientZioBackend`.
  */
-final case class WebhookSttpClient(sttpClient: SttpClient, permits: Semaphore) extends WebhookHttpClient {
+final case class WebhookSttpClient(sttpClient: SttpClient.Service, permits: Semaphore) extends WebhookHttpClient {
 
   def post(webhookRequest: WebhookHttpRequest): IO[HttpPostError, WebhookHttpResponse] =
     permits.withPermit {
diff --git a/webhooks/src/main/scala/zio/webhooks/backends/sttp/package.scala b/webhooks/src/main/scala/zio/webhooks/backends/sttp/package.scala
deleted file mode 100644
index e649fd80..00000000
--- a/webhooks/src/main/scala/zio/webhooks/backends/sttp/package.scala
+++ /dev/null
@@ -1,16 +0,0 @@
-package zio.webhooks.backends
-
-import _root_.sttp.client.SttpBackend
-import _root_.sttp.client.asynchttpclient.WebSocketHandler
-import zio._
-import zio.stream.Stream
-
-package object sttp {
-
-  /**
-   * An [[SttpClient]] is an `SttpBackend` for ZIO.
-   *
-   * Taken from https://sttp.softwaremill.com/en/v2/backends/zio.html
-   */
-  type SttpClient = SttpBackend[Task, Stream[Throwable, Byte], WebSocketHandler]
-}