diff --git a/build.sbt b/build.sbt
index df1565c1ec..66677b9d4f 100644
--- a/build.sbt
+++ b/build.sbt
@@ -198,7 +198,6 @@ lazy val googleCloudPubSubGrpc = alpakkaProject(
   akkaGrpcCodeGeneratorSettings ~= { _.filterNot(_ == "flat_package") },
   akkaGrpcGeneratedSources := Seq(AkkaGrpc.Client),
   akkaGrpcGeneratedLanguages := Seq(AkkaGrpc.Scala, AkkaGrpc.Java),
-  Compile / PB.protoSources += (Compile / PB.externalIncludePath).value,
   // for the ExampleApp in the tests
   connectInput in run := true,
   Compile / scalacOptions ++= Seq(
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index b3c4dad3cf..d796031f19 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -240,9 +240,9 @@ object Dependencies {
     // see Akka gRPC version in plugins.sbt
     libraryDependencies ++= Seq(
         // https://github.com/googleapis/java-pubsub/tree/master/proto-google-cloud-pubsub-v1/
-        "com.google.api.grpc" % "grpc-google-cloud-pubsub-v1" % "1.85.1" % "protobuf-src", // ApacheV2
+        "com.google.cloud" % "google-cloud-pubsub" % "1.112.5" % "protobuf-src", // ApacheV2
         "io.grpc" % "grpc-auth" % akka.grpc.gen.BuildInfo.grpcVersion, // ApacheV2
-        "com.google.auth" % "google-auth-library-oauth2-http" % "0.20.0", // BSD 3-clause
+        "com.google.auth" % "google-auth-library-oauth2-http" % "0.22.2", // BSD 3-clause
         // pull in Akka Discovery for our Akka version
         "com.typesafe.akka" %% "akka-discovery" % AkkaVersion
       ) ++ Silencer
diff --git a/project/plugins.sbt b/project/plugins.sbt
index f19b85cbc4..809ad9d134 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -15,6 +15,6 @@ addSbtPlugin("com.eed3si9n" % "sbt-unidoc" % "0.4.3")
 addSbtPlugin("com.thoughtworks.sbt-api-mappings" % "sbt-api-mappings" % "3.0.0")
 addSbtPlugin("com.typesafe.sbt" % "sbt-site" % "1.4.1")
 // Akka gRPC -- sync with version in Dependencies.scala
-addSbtPlugin("com.lightbend.akka.grpc" % "sbt-akka-grpc" % "1.0.0")
+addSbtPlugin("com.lightbend.akka.grpc" % "sbt-akka-grpc" % "2.0.0-M1")
 // templating
 addSbtPlugin("io.spray" % "sbt-boilerplate" % "0.6.1")