diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 46baec3..3f7fcc3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,17 +13,20 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [ '13' ]
-        scala: [ '2.13.10' ]
+        java: [ '17' ]
+        scala: [ '2.13.15' ]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up JDK
-      uses: actions/setup-java@v2
+      uses: actions/setup-java@v4
       with:
-        java-version: ${{ matrix.java }}
-        distribution: 'zulu'
+        distribution: temurin
+        java-version: ${{matrix.java}}
+        cache: sbt
     - name: print Java version
       run: java -version
+    - name: Setup sbt launcher
+      uses: sbt/setup-sbt@v1
     - name: setup apibuilder config
       run: mkdir ~/.apibuilder && echo "[default]" > ~/.apibuilder/config
     - name: Build
diff --git a/src/main/scala/io/apibuilder/validation/MultiService.scala b/src/main/scala/io/apibuilder/validation/MultiService.scala
index 133dd76..64c01be 100644
--- a/src/main/scala/io/apibuilder/validation/MultiService.scala
+++ b/src/main/scala/io/apibuilder/validation/MultiService.scala
@@ -167,14 +167,20 @@ object MultiService {
     }
   }
 
+  /**
+   * Allow a client to read from for example s3 by providing a reader already constructed from the
+   * stream.
+   */
+  def fromZipFileReader(reader: ZipFileReader): ValidatedNec[String, Seq[ApiBuilderService]] = {
+    val fileSorter = FileOrder(reader.entries.find(_.name.toLowerCase() == OrderByFileName).map(_.file))
+    reader.entries
+      .filter { e => ZipFileReader.isJsonFile(e.name) }
+      .sortBy { e => fileSorter.sortOrder(e.name) }
+      .map { e => ApiBuilderService.fromFile(e.file) }
+      .sequence
+  }
+
   private def servicesFromZip(url: String): ValidatedNec[String, Seq[ApiBuilderService]] = {
-    ZipFileReader.fromUrl(url).andThen { reader =>
-      val fileSorter = FileOrder(reader.entries.find(_.name.toLowerCase() == OrderByFileName).map(_.file))
-      reader.entries
-        .filter { e => ZipFileReader.isJsonFile(e.name) }
-        .sortBy { e => fileSorter.sortOrder(e.name) }
-        .map { e => ApiBuilderService.fromFile(e.file) }
-        .sequence
-    }
+    ZipFileReader.fromUrl(url).andThen(fromZipFileReader)
   }
 }
diff --git a/src/test/scala/io/apibuilder/validation/MultiServiceZipSpec.scala b/src/test/scala/io/apibuilder/validation/MultiServiceZipSpec.scala
index 3db5bf8..41b10e2 100644
--- a/src/test/scala/io/apibuilder/validation/MultiServiceZipSpec.scala
+++ b/src/test/scala/io/apibuilder/validation/MultiServiceZipSpec.scala
@@ -1,14 +1,15 @@
 package io.apibuilder.validation
 
-import java.io.File
 import io.apibuilder.builders.ApiBuilderServiceBuilders
+import io.apibuilder.helpers._
 import io.apibuilder.spec.v0.models.json._
 import io.apibuilder.spec.v0.models.{Method, Service}
 import io.apibuilder.validation.zip.ZipFileBuilder
-import io.apibuilder.helpers._
-import play.api.libs.json._
 import org.scalatest.matchers.must.Matchers
 import org.scalatest.wordspec.AnyWordSpec
+import play.api.libs.json._
+
+import java.io.File
 
 class MultiServiceZipSpec extends AnyWordSpec with Matchers
   with ApiBuilderServiceBuilders
@@ -60,9 +61,6 @@ class MultiServiceZipSpec extends AnyWordSpec with Matchers
   }
 
   "Able to download service from the internet" in {
-    expectValidNec {
-      MultiService.fromUrl("file:///tmp/specs/api.spec.billing.json")
-    }
     expectValidNec {
       MultiService.fromUrl("https://cdn.flow.io/util/lib-apibuilder/specs.zip")
     }