diff --git a/README.md b/README.md
index b34d0f00..770a4718 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,7 @@ httpClient.POST[ResponseType](url, payload, headers)
 becomes
 
 ```scala
-httpClientV2.post(url"$url").withBody(Json.toJson(payload)).addHeaders(headers).execute[ResponseType]
+httpClientV2.post(url"$url").withBody(Json.toJson(payload)).setHeader(headers).execute[ResponseType]
 ```
 
 If you were previously creating multiple HttpClients to configure proxies or change the user-agent, this will no-longer be necessary since these can all be controlled with the HttpClientV2 API per call.
diff --git a/http-verbs-play-30/src/test/scala/uk/gov/hmrc/http/client/HttpClientV2Spec.scala b/http-verbs-play-30/src/test/scala/uk/gov/hmrc/http/client/HttpClientV2Spec.scala
index 03bd34a9..74bd56ac 100644
--- a/http-verbs-play-30/src/test/scala/uk/gov/hmrc/http/client/HttpClientV2Spec.scala
+++ b/http-verbs-play-30/src/test/scala/uk/gov/hmrc/http/client/HttpClientV2Spec.scala
@@ -25,7 +25,7 @@ import org.mockito.Mockito.verify
 import org.scalatest.BeforeAndAfter
 import org.scalatest.concurrent.{IntegrationPatience, ScalaFutures}
 import org.scalatest.matchers.should.Matchers
-import org.scalatest.wordspec.AnyWordSpecLike
+import org.scalatest.wordspec.AnyWordSpec
 import org.scalatestplus.mockito.MockitoSugar
 import play.api.Configuration
 import play.api.libs.json.{Json, Reads, Writes}
@@ -46,7 +46,7 @@ import scala.concurrent.ExecutionContext.Implicits.global
 import scala.util.Random
 
 class HttpClientV2Spec
-  extends AnyWordSpecLike
+  extends AnyWordSpec
      with Matchers
      with WireMockSupport
      with ScalaFutures
diff --git a/project/LibDependencies.scala b/project/LibDependencies.scala
index 3577b96d..97919589 100644
--- a/project/LibDependencies.scala
+++ b/project/LibDependencies.scala
@@ -2,14 +2,14 @@ import sbt._
 
 object LibDependencies {
 
-  val play28Version     = "2.8.21"
-  val play29Version     = "2.9.2"
-  val play30Version     = "3.0.2"
+  val play28Version     = "2.8.22"
+  val play29Version     = "2.9.4"
+  val play30Version     = "3.0.4"
 
   // Dependencies for http-verbs-common and http-verbs-play-xxx modules
   def coreCompileCommon(scalaVersion: String) = Seq(
     "com.typesafe"                %  "config"           % "1.4.3",
-    "com.softwaremill.sttp.model" %% "core"             % "1.7.2",
+    "com.softwaremill.sttp.model" %% "core"             % "1.7.10",
     "dev.zio"                     %% "izumi-reflect"    % "2.3.8"
   ) ++
     (CrossVersion.partialVersion(scalaVersion) match {
@@ -26,25 +26,22 @@ object LibDependencies {
   )
 
   val coreCompilePlay29 = Seq(
-    "com.typesafe.play" %% "play-json"   % "2.10.4", // version provided by play29Version
+    "com.typesafe.play" %% "play-json"   % "2.10.6", // version provided by play29Version
     "org.slf4j"         %  "slf4j-api"   % "2.0.9",
     "com.typesafe.play" %% "play-ahc-ws" % play29Version
   )
 
   val coreCompilePlay30 = Seq(
-    "org.playframework" %% "play-json"   % "3.0.2", // version provided by play30Version
+    "org.playframework" %% "play-json"   % "3.0.4", // version provided by play30Version
     "org.slf4j"         %  "slf4j-api"   % "2.0.9",
     "org.playframework" %% "play-ahc-ws" % play30Version
   )
 
   def coreTestCommon = Seq(
-    "org.scalatest"          %% "scalatest"                % "3.2.17"      % Test,
-    "org.scalatestplus"      %% "scalacheck-1-17"          % "3.2.17.0"    % Test,
-    "com.vladsch.flexmark"   %  "flexmark-all"             % "0.64.8"      % Test,
-    // mockito-scala is not available for Scala 3 https://github.com/mockito/mockito-scala/issues/364
-    // use java build + scalatestplus:mockito
-    "org.scalatestplus"      %% "mockito-3-4"              % "3.2.10.0"    % Test // recommended by play docs https://www.playframework.com/documentation/3.0.x/ScalaTestingWithScalaTest
-    // or https://mvnrepository.com/artifact/eu.monniot/scala3mock
+    "org.scalatest"          %% "scalatest"       % "3.2.17"      % Test,
+    "org.scalatestplus"      %% "scalacheck-1-17" % "3.2.17.0"    % Test,
+    "com.vladsch.flexmark"   %  "flexmark-all"    % "0.64.8"      % Test,
+    "org.scalatestplus"      %% "mockito-4-11"    % "3.2.17.0"    % Test
   )
 
   val coreTestPlay28 = Seq(
diff --git a/project/build.properties b/project/build.properties
index 880e8fbf..daaabb75 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -14,4 +14,4 @@
 # limitations under the License.
 #
 
-sbt.version=1.9.7
+sbt.version=1.9.9
diff --git a/project/plugins.sbt b/project/plugins.sbt
index e8fc6695..804d6243 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,4 +1,4 @@
 resolvers += MavenRepository("HMRC-open-artefacts-maven2", "https://open.artefacts.tax.service.gov.uk/maven2")
 resolvers += Resolver.url("HMRC-open-artefacts-ivy2", url("https://open.artefacts.tax.service.gov.uk/ivy2"))(Resolver.ivyStylePatterns)
 
-addSbtPlugin("uk.gov.hmrc" % "sbt-auto-build" % "3.21.0")
+addSbtPlugin("uk.gov.hmrc" % "sbt-auto-build" % "3.22.0")