diff --git a/filesystems/blob/src/main/scala/cromwell/filesystems/blob/BlobPathBuilderFactory.scala b/filesystems/blob/src/main/scala/cromwell/filesystems/blob/BlobPathBuilderFactory.scala
index cea7269522a..b12abf5cc34 100644
--- a/filesystems/blob/src/main/scala/cromwell/filesystems/blob/BlobPathBuilderFactory.scala
+++ b/filesystems/blob/src/main/scala/cromwell/filesystems/blob/BlobPathBuilderFactory.scala
@@ -20,14 +20,13 @@ import scala.jdk.CollectionConverters._
 
 final case class BlobFileSystemConfig(config: Config)
 final case class BlobPathBuilderFactory(globalConfig: Config, instanceConfig: Config, singletonConfig: BlobFileSystemConfig) extends PathBuilderFactory {
-  val sasToken: String = instanceConfig.as[String]("sas-token")
   val container: String = instanceConfig.as[String]("store")
   val endpoint: String = instanceConfig.as[String]("endpoint")
-  val workspaceId: String = instanceConfig.as[String]("workspace-id")
-  val workspaceManagerURL: String = singletonConfig.config.as[String]("workspace-manager-url")
+  val workspaceId: Option[String] = instanceConfig.as[Option[String]]("workspace-id")
+  val workspaceManagerURL: Option[String] = singletonConfig.config.as[Option[String]]("workspace-manager-url")
 
   val blobTokenGenerator: BlobTokenGenerator = BlobTokenGenerator.createBlobTokenGenerator(
-    container, endpoint, Option(workspaceId), Option(workspaceManagerURL))
+    container, endpoint, workspaceId, workspaceManagerURL)
 
   override def withOptions(options: WorkflowOptions)(implicit as: ActorSystem, ec: ExecutionContext): Future[BlobPathBuilder] = {
     Future {
diff --git a/filesystems/blob/src/test/scala/cromwell/filesystems/blob/BlobPathBuilderFactorySpec.scala b/filesystems/blob/src/test/scala/cromwell/filesystems/blob/BlobPathBuilderFactorySpec.scala
index 8c9b2345c69..08efd534056 100644
--- a/filesystems/blob/src/test/scala/cromwell/filesystems/blob/BlobPathBuilderFactorySpec.scala
+++ b/filesystems/blob/src/test/scala/cromwell/filesystems/blob/BlobPathBuilderFactorySpec.scala
@@ -9,12 +9,10 @@ class BlobPathBuilderFactorySpec extends AnyFlatSpec with Matchers {
   it should "parse configs for a functioning factory" in {
     val endpoint = BlobPathBuilderSpec.buildEndpoint("coaexternalstorage")
     val store = "inputs"
-    val sasToken = "{SAS TOKEN HERE}"
     val workspaceId = "mockWorkspaceId"
     val workspaceManagerURL = "https://test.ws.org"
     val instanceConfig = ConfigFactory.parseString(
       s"""
-      |sas-token = "$sasToken"
       |store = "$store"
       |endpoint = "$endpoint"
       |workspace-id = "$workspaceId"
@@ -24,8 +22,7 @@ class BlobPathBuilderFactorySpec extends AnyFlatSpec with Matchers {
     val factory = BlobPathBuilderFactory(globalConfig, instanceConfig, new BlobFileSystemConfig(singletonConfig))
     factory.container should equal(store)
     factory.endpoint should equal(endpoint)
-    factory.sasToken should equal(sasToken)
-    factory.workspaceId should equal(workspaceId)
-    factory.workspaceManagerURL should equal(workspaceManagerURL)
+    factory.workspaceId should equal(Some(workspaceId))
+    factory.workspaceManagerURL should equal(Some(workspaceManagerURL))
   }
 }